Article
Materials Science, Ceramics
Ricardo Jimenez, Jesus Ricote, Inigo Bretos, Rafael J. Jimenez Rioboo, Federico Mompean, Ana Ruiz, Haibing Xie, Monica Lira-Cantu, M. Lourdes Calzada
Summary: A chemical solution deposition method has been developed in this study to promote the formation of high-pressure perovskite films by applying external compressive stress. The resulting BFCO perovskite films exhibit narrow bandgaps and excellent ferroelectric response, with the potential for use in self-powered multifunctional devices. This stress-mediated solution deposition method can be extended to other perovskite films which are unviable under conventional deposition methods.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Dmitry V. Karpinsky, Maxim V. Silibin, Siarhei I. Latushka, Dmitry V. Zhaludkevich, Vadim V. Sikolenko, Hanan Al-Ghamdi, Aljawhara H. Almuqrin, M. I. Sayyed, Alexei A. Belik
Summary: The crystal structure and magnetic state of the (1 - x)BiFeO3-(x)BiMnO3 solid solution were analyzed. It was found that increasing the dopant concentration led to structural and magnetic transitions at room temperature, resulting in a two-phase structure. Irreversible temperature-driven structural transitions favored the stabilization of high-temperature structural phases.
Article
Engineering, Electrical & Electronic
Shaohua Dong, Di Ao, Wenlong Liu, Shuxian Liu, Xue Wang, Han Zhang, Guoqiang Tan, Dinghan Liu, Huijun Ren
Summary: To address the limited application of pure bismuth ferrate thin films in electron devices, researchers constructed BiFe0.97Cr0.03O3/BiFe1-xMnxO3 superlattice-like multilayer composite thin films with a low mismatch interface. The high leakage current and false polarization phenomenon were regulated by the interface composite. The BFC0.03O/BFM0.09O sample exhibited the highest rectangles, larger residual polarization value, lower coercive field, and the largest polarization turnover current.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Sakineh Hosseini, Ahmad Gholizadeh
Summary: In this study, pure-phase BiFe1-xMnxO3 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) thin films were deposited using a low-temperature sol-gel assisted spin coating procedure. It was found that the films underwent a structural transition and the surface morphology and grain size were affected by the amount of Mn. The BiFe0.8Mn0.2O3 thin film showed the lowest bandgap energy and exhibited the best photocatalytic activity.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Jingjing Wang, Dayu Zhou, Wei Dong, Xiaoduo Hou, Feng Liu, Nana Sun, Faizan Ali, Ziqi Li
Summary: The study demonstrates that the ferroelectric properties and crystalline structure of pure zirconia thin films are influenced by film thickness, with an increase in thickness leading to a higher m-phase fraction. Futhermore, a phase transition from orthorhombic to cubic and tetragonal phases was observed as the thickness increased.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Gaochao Zhao, Chengbing Pan, Wei Dong, Peng Tong, Jie Yang, Xuebin Zhu, Lihua Yin, Wenhai Song, Yuping Sun
Summary: In this study, modulation of magnetism by electric field in designed insulating multiferroics is demonstrated. By significantly enhancing the converse magnetoelectric effect near the morphotropic phase boundary, considerable and repeatable electric field-modulated magnetization is achieved at both room temperature and 350 K.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Uisik Jeong, Hyun Yeol Rho, Haewon Cho, Muhammad Naqi, Joo On Oh, Yongin Cho, Pavan Pujar, Sunkook Kim
Summary: Chemical solution deposition (CSD) is a low-cost technique for growing thin films of functional materials. In this study, researchers have successfully achieved high ferroelectric output in La-doped HfO2 using CSD, and the material showed excellent performance in field effect transistors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ramunas Diliautas, Aldona Beganskiene, Dovydas Karoblis, Kestutis Mazeika, Dalis Baltrunas, Aleksej Zarkov, Rimantas Raudonis, Aivaras Kareiva
Summary: In this study, BiFe1-xMnxO3 solid solutions were prepared by low temperature sol-gel processing, and it was found that the structural, magnetic and morphological properties of the samples are dependent on the chemical composition, with monophasic samples formed up to 25 mol% of substitution. The study also investigated the thermal behavior of the precursor gels, as well as the magnetic properties of the solid solutions, observing antiferromagnetism and weak ferromagnetism in the samples.
SOLID STATE SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Miguel Badillo, Sepide Taleb, Taraneh Mokabber, Jan Rieck, Rebeca Castanedo, Gerardo Torres, Beatriz Noheda, Monica Acuautla
Summary: So far, only a few chemical routes have been reported for the fabrication of ferroelectric HfO2 films, most of which are complicated and environmentally unfriendly. In this study, a new and effective chemical route for preparing ferroelectric doped-HfO2 films is presented. The solution is prepared from simple and stable precursors, easily handled in an open atmosphere, and does not require restrictive processing conditions. The doped films exhibit good ferroelectric properties and can be crystallized through rapid thermal annealing. The developed precursor solution shows promise for applications in spray-coating and ink-jet printing techniques.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
An Hoang-Thuy Nguyen, Manh-Cuong Nguyen, Anh-Duy Nguyen, Ji-Yong Yim, Jeong-Han Kim, No-Hwal Park, Seung-Joon Jeon, Daewoong Kwon, Rino Choi
Summary: The effects of the grain size of Pt bottom electrodes on the ferroelectricity of hafnium zirconium oxide (HZO) were studied, and it was found that bottom electrodes with smaller grain sizes could enhance the ferroelectric polarization of HZO thin films.
Article
Chemistry, Multidisciplinary
Xiang Xu, Tingting Zhong, Nian Zuo, Zexin Li, Dongyan Li, Lejing Pi, Ping Chen, Menghao Wu, Tianyou Zhai, Xing Zhou
Summary: In this study, CuCrS2 nanoflakes were successfully synthesized by salt-assisted chemical vapor deposition, demonstrating switchable ferroelectric polarization even at a thickness of 6 nm. The high T-C of around 700 K can be attributed to the robust tetrahedral bonding configurations of Cu cations, with further clarification provided by a theoretically predicted high order-disorder transition barrier and structure evolution from 600 to 800 K. Additionally, interlocked out-of-plane and in-plane ferroelectric domains were observed, leading to the demonstration of two devices based on different polarizations.
Review
Engineering, Environmental
Jie Tu, Jiaqi Ding, Guoqiang Xi, Hangren Li, Qianqian Yang, Jianjun Tian, Linxing Zhang
Summary: In this study, stable multifunctional multiferroic Bi0.5Sm0.5FeO3 (BSFO) double-perovskite epitaxial thin films were successfully synthesized by regulating the deposition temperature. The BSFO thin films exhibited robust ferroelectric polarization and excellent photoresponse, and its switchable ferroelectric photovoltaic feature demonstrated the potential for ferroelectric storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Yang Chen, Haoming Wei, Yangqing Wu, Bingqiang Cao
Summary: This study manipulated the ferroelectric domain structure in BiFe1-xCoxO3 films by controlling the Co-doped concentration. The results showed that different domain structures have different effects on the bulk photovoltaic effect, with the 71 degrees domain structure exhibiting larger depolarization field and higher photoconductivity. Optimizing the domain structure can effectively enhance the bulk photovoltaic effect and provide a new method for regulating the domain structure in photovoltaic devices.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
S. A. Sharko, A. I. Serokurova, N. N. Novitskii, N. N. Poddubnaya, V. A. Ketsko, A. I. Stognij
Summary: This article demonstrates that the elastic strains at the interface in layered structures of thin cobalt, nickel, and permendur layers on ferroelectric ceramics substrates have a more significant impact on the magnetoelectric effect than the magnetostriction of the ferromagnetic layer. These structures, obtained through ion-beam sputtering and planarization, exhibit higher magnetoelectric voltage coefficient for cobalt than for nickel and permendur. They also have thermosability within the temperature range of 25 to +120 degrees Celsius and reproducible magnetoelectric properties, making them suitable for magnetoelectric converters and magnetic field sensors.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Branimir Bajac, Jelena Vukmirovic, Natasa Samardzic, Juras Banys, Goran Stojanovic, Jelena Bobic, Vladimir V. Srdic
Summary: In this study, lead-free multilayer structures composed of perovskite BaTiO3 and spinel NiFe2O4 thin layers were obtained using a solution deposition method. The results showed well-defined layered structure, nanometer-scale grains, and crystalline nature of the thin films. The dielectric properties of the multilayer BaTiO3/NiFe2O4 thin films were influenced by temperature and frequency, and the introduction of the ferrite layer reduced dielectric response and increased low frequency permittivity dispersion.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Maruthappan Manikandan, Yidan Hu, Kunpeng Cai, Jintao Zhang, Weihao Zhang, Mengmeng Niu, Dongyang Hua, Jun Shang, Xianwei Wang
Summary: In this study, NiO/Co3O4 nanocomposites were synthesized by hydrothermal method and used as electrode materials for electrochemical supercapacitors. The electrochemical performances of NiO/Co3O4 nanocomposites were found to be dependent on their mass ratio, with the 1:1 ratio showing the highest specific capacitance. This investigation offers a useful strategy for developing electrode materials with improved electrochemical performance.
Article
Energy & Fuels
R. Packiaraj, P. Devendran, K. S. Venkatesh, K. Mahendraprabhu, N. Nallamuthu
Summary: In this study, flower-like nano-sized nickel cobalt oxide was synthesized successfully and used in the fabrication of an asymmetric supercapacitor device. The prepared materials showed good electrochemical performance with high specific capacitance and cyclic stability. Furthermore, the asymmetric supercapacitor energy storage device achieved high specific energy and specific power values.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
M. R. Manikandan, K. P. Cai, Y. D. Hu, C. L. Li, J. T. Zhang, Y. P. Zheng, Y. F. Liang, H. R. Song, M. Y. Shang, X. N. Shi, J. X. Zhang, S. Q. Yin, S. Y. Shang, X. W. Wang
Summary: Metal-organic frameworks (MOFs)-based electrode materials have attracted attention in energy storage applications. A nickel-based metal-organic framework (Ni-MOF) was synthesized by simple hydrothermal reaction, with different reaction times affecting its energy storage performance. Among the various reaction times, the Ni-MOF prepared under 30-hour reaction time showed the best energy storage performance, with the highest specific capacity and good rate capability.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Energy & Fuels
R. Packiaraj, Kamaraj Mahendraprabhu, P. Devendran, N. Nallamuthu, Baskaran Palanivel, K. S. Venkatesh, Ramesh Karuppannan
Summary: This research successfully prepared single-metal oxides, binary-metal oxides, and ternary mixed-metal oxides through simple methods, showing that mixed transition-metal oxides can exhibit superior electrochemical performance compared to single and binary metal oxides by tuning their structure and properties. The fabricated electrode materials showed excellent capacitance and energy storage capabilities, making them promising for high-performance energy storage device applications.
Article
Physics, Applied
Xianwei Wang, Shuying Chen, Yifan Liang, Bihui Zhang, Xinnan Shi, Ruoyu Zhang, Yujia Shi, Ziyi Ren, Rui Liu, Yanchun Hu, Jun Shang, Shaoqian Yin
Summary: The crystal structure, microstructure, dielectric properties and energy storage properties of BCZT ceramics with different TiO2 additions were investigated. The addition of TiO2 resulted in the appearance of a secondary phase in high TiO2 content ceramics. SEM analysis revealed a decrease in average grain size with TiO2 addition. The phase transition temperature of BCZT ceramics shifted to lower temperature with TiO2 addition. Ceramics with high TiO2 content exhibited higher impedance and slimmer hysteresis loops. A relatively large energy storage density and efficiency were achieved in ceramics with 40% TiO2 content.
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
X. W. Wang, X. N. Shi, R. Y. Zhang, Y. C. Shi, Y. F. Liang, B. H. Zhang, H. N. Li, S. Y. Hu, K. X. Yu, Y. C. Hu, J. Shang, S. Q. Yin
Summary: The effects of Co doping on the microstructure, dielectric, and energy storage properties of BCZT ceramics were studied. The results showed that Co doping reduced grain size and improved the uniformity of the samples. Doped samples exhibited relaxor ferroelectric behavior, with a more obvious phase transition and reduced energy storage loss, resulting in improved energy storage efficiency.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
X. W. Wang, K. P. Cai, M. R. Manikandan, P. A. Lu, P. F. Yang, M. Y. Shang, H. R. Song, W. L. Zhao, Y. X. Fu, J. Liu, W. B. Lou, R. Y. Zhang, Y. C. Hu, J. Shang, S. Q. Yin
Summary: In this study, nickel-based bimetallic metal-organic frameworks were synthesized efficiently and cobalt metal ions were partially incorporated to enhance the supercapacitor performance. The synergistic interactions between nickel and cobalt ions, as well as the hierarchical microsphere structure in MOFs, contribute to the performance enhancement. This research provides insights for the fabrication of homogeneous bimetallic based MOFs electrode materials for next-generation energy conversion and storage devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
S. Q. Yin, J. Feng, Y. P. Zheng, Z. Y. Ren, L. F. He, H. N. Li, F. Yang, S. T. Dang, S. Y. Chen, Y. C. Hu, J. Shang, X. W. Wang
Summary: Energy storage ceramics are important materials used in high temperature-resistant dielectric pulse power systems. This study prepared BCZT-BFMT ceramics using the sol-gel method and solid phase method, and investigated the effects of different doping amounts on their energy storage performance. The results showed that the sample with 50% doping content exhibited better dielectric properties.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Condensed Matter
Y. P. Zheng, Y. C. Shi, Z. Y. Ren, B. H. Zhang, J. Feng, H. N. Li, S. T. Dang, F. Yang, J. Shang, S. Q. Yin, Y. C. Hu, Z. Y. Gao, X. W. Wang
Summary: A series of Mn-doped BCZT ceramics were prepared via the sol-gel method. Mn was found to inhibit the growth of BCZT grain size. The Curie temperature decreases and the degree of dispersed phase increases with the increase of the doping amount. The hysteresis loop of BCZT ceramic can be adjusted by doping a certain amount of Mn ions.
PHYSICA B-CONDENSED MATTER
(2022)
Review
Materials Science, Multidisciplinary
X. W. Wang, J. T. Fan, M. Manikandan, B. H. Zhang, J. N. Guo, J. Y. Chen, F. Yang, M. M. Zheng, H. X. Zhang, M. Z. Hou, Y. X. Fu, S. Y. Shang, Y. C. Hu, J. Shang, S. Q. Yin
Summary: This paper reviews the important aspects and recent progress of poly (vinylidene fluoride)-based composites with lead-free ferroelectric ceramics for high energy density capacitors. It discusses the comprehensive effects of filler shape, core-shell structure, layered structure, and interface effect on the dielectric properties, breakdown strength, and energy density of the composites.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
S. T. Dang, L. L. Xue, L. F. He, Y. C. Shi, H. N. Li, Y. C. Hu, J. Shang, S. Q. Yin, X. W. Wang
Summary: A series of BCZT ceramics were fabricated using the sol-gel method with different aging temperatures. The samples exhibited significant improvements in structure, dielectric property, and energy storage property compared to those synthesized by the traditional solid-state reaction method. The optimal BCZT sample with an aging temperature of 60°C showed high permittivity and low dielectric loss, and it achieved a higher energy storage efficiency at 40 kV/cm electric field.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
X. W. Wang, R. Y. Zhang, H. N. Li, B. H. Zhang, Y. Y. Li, Z. Y. Ren, Y. D. Hao, J. Feng, Y. C. Shi, M. M. Yang, X. F. Li, Y. C. Hu, J. Shang, S. Q. Yin
Summary: Bi and Li co-doped BaZr0.15Ti0.85O3 ceramics were fabricated by the solid-state method and their impact on microstructural, dielectric, ferroelectric, and energy storage properties were investigated. XRD results showed a perovskite structure with no secondary phase in all samples. SEM pictures revealed a significant decrease in average grain size with increasing doping concentration. Moreover, the phase transition peak broadened and the Curie temperature shifted towards lower temperature. The doped sample exhibited a high energy storage density of 1.23 J/cm(3) and significantly enhanced energy storage efficiency compared to the undoped sample.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
S. Y. Chen, R. Liu, Y. P. Zheng, Y. J. Shi, S. T. Dang, Y. C. Shi, F. Yang, J. H. Li, L. F. He, S. J. Wu, X. F. Li, Y. C. Hu, J. Shang, S. Q. Yin, X. W. Wang
Summary: The structure and electrical properties of Ba0.85Ca0.15Zr0.1Ti0.9O3-xBiFeO3 ceramics were investigated. The samples showed perovskite structure with no detected second phase. The grain size of BiFeO3-doped ceramic samples was significantly reduced. The doped samples exhibited relaxation characteristics, with obvious dispersion phase transition and frequency dispersion. The study found that the sample with 8% doping had the best energy storage characteristics, with an energy storage density of 0.57 J/cm3 and an energy storage efficiency of 91.3%. This research provides a method to improve the energy storage density and efficiency of BCZT ceramics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
P. A. Lu, M. R. Manikandan, P. F. Yang, Y. L. He, F. Yang, S. T. Dang, Y. C. Shi, W. B. Lou, R. Liu, S. J. Wu, X. F. Li, Y. C. Hu, J. Shang, S. Q. Yin, X. W. Wang
Summary: In this study, single phase hematite nanoparticles were synthesized and used as electrode material for electrochemical supercapacitors. The material exhibited good capacitance performance and stability due to its unique nanostructure. This research provides important insights for the development of iron-based supercapacitors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Materials Science, Multidisciplinary
Xianwei Wang, Fei Yang, Kexin Yu, Bihui Zhang, Jingyao Chen, Yujia Shi, Peifan Yang, Lifang He, Haonan Li, Rui Liu, Xiaofang Li, Yanchun Hu, Jun Shang, Shaoqian Yin
Summary: Energy storage capacitors are significant in pulse power equipment and have gained increasing attention in recent years due to the high energy storage density of anti-ferroelectric materials. Among them, PbZrO3 (PZ)-based anti-ferroelectric films are considered promising for energy storage in pulsed power systems. This review focuses on the progress of PZ-based films for energy storage and provides approaches like element modification, composite materials, and process improvement to enhance their energy storage density. Challenges and future directions for PZ-based films are also discussed.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
