Article
Materials Science, Multidisciplinary
A. Rajeshwari, I. Kartharinal Punithavathy, S. Johnson Jeyakumar, M. Jothibas
Summary: Gadolinium-doped manganese nano ferrites were synthesized using a sol-gel method for microwave absorbers and storage devices. XRD analysis showed a well crystalline cubic phase with smaller crystallite size in Gd-doped nanoferrites. The morphology was spherical with less agglomeration, and the bandgap was influenced by the dopant-driven synergistic effect. The magnetic hysteresis curves demonstrated a soft ferromagnetic nature with increasing coercivity and decreasing saturation. Gd co-doping altered the resistance of grain and grain boundaries, and better dielectric characteristics were observed with increasing Gd3+ concentration at higher AC frequencies (voltages). The lowest dielectric loss of 1.8542 and the highest dielectric constant of about 1574426.14 were observed for manganese nano ferrites influenced by Gd3+ ion.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
Sachin Kumar Godara, Ashwani Kumar Sood, Shilpi, Arun Kumar, Varinder Kaur, Parambir Singh Malhi, Mandeep Singh, Swati Verma, Khalid Mujasam Batoo
Summary: This study reports the synthesis of BaZn0.2Zr0.2Fe11.6O19 hexaferrite nanoparticles through the sol-gel auto-combustion route using tartaric acid as fuel. The optimal tartaric acid to metal nitrate ratio was found to be 1.00, and the materials showed potential for microwave absorber and magnetic recording applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
L. E. De Leon Prado, D. A. Cortes Hernandez, J. C. Escobedo Bocardo, G. F. Hurtado Lopez
Summary: In this study, magnetic nanoparticles with mixed ferrites were synthesized via the sol-gel method and their physicochemical properties were evaluated under different heat treatment conditions. The obtained nanosized magnetic ferrites showed a single crystalline phase, close to the superparamagnetic regime, and exhibited heating ability under the application of a magnetic field.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
M. Arifuzzaman, M. B. Hossen, Md. Harun-Or-Rashid, M. L. Rahman
Summary: A series of nanocrystalline Ni0.7-xCuxCd0.3Fe2O4 materials were synthesized through an auto-combusted Sol-gel approach and annealed at 700 degrees C. The materials exhibited cubic spinel phase with increasing Cu content resulting in larger crystallite size, particle size, lattice constant, and unit cell volume. Magnetic characterizations showed a decrease in saturation magnetization and experimental magnetic moment with Cu substitution up to 20%, followed by an increase with further Cu content.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Kiran Mehmood, Atta Ur Rehman, Nasir Amin, N. A. Morley, Muhammad Imran Arshad
Summary: Spinel ferrites are important due to their low cost, easy preparation, and outstanding electrical, dielectric, and magnetic properties. Graphene nanoplatelets (GNPs) are an excellent supporting material for composites. The NCNF/2.5 wt%GNPs composite prepared by SGAC route showed improved dielectric characteristics, magnetic properties, and microwave frequency performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Mehjabeen Khan, Jyoti Shukla, Pallavi Saxena, Ashutosh Mishra, Pradeep Sharma
Summary: In this study, multi-phase ceramic composites consisting of barium titanate and rare-earth-doped magnetic spinel ferrite were synthesized and their structure, magnetic properties, and dielectric properties were investigated. The results showed that the rare-earth-doped magnetic spinel ferrite affected the magnetic and dielectric response of barium titanate.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
T. Rafique, M. Atif, Atta Ur Rehman, H. Wahab, W. Khalid, Z. Ali, M. Nadeem
Summary: Zinc substituted manganese ferrites were synthesized using the citrate sol-gel route, and their structure, stoichiometry, and properties were analyzed. The results showed that zinc substitution led to samples with excellent resistive and dielectric properties, making it suitable for radar absorbing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Farzana Majid, Javeria Rauf, Sadia Ata, Ismat Bibi, Abdul Malik, Sobhy M. Ibrahim, Adnan Ali, Munawar Iqbal
Summary: This study compared the magnetic, structural and dielectric characteristics of NiFe2O4 prepared using hydrothermal and sol-gel routes. The results showed that the synthesis route affected the structural, magnetic and dielectric properties of NiFe2O4.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Banu Sungu Misirlioglu, Volkan Kurt, Hilal Calik, Oznur Cakir, Rabia Cakir-Koc
Summary: Cobalt ferrite and magnesium oxide nanoparticles were synthesized and mixed to form nanocomposites. The nanocomposites exhibited a pure spinel ferrite structure and a single phase of magnesium oxide nanoparticles without impurities. In vitro cytotoxicity tests showed that the nanocomposites had high cell viability. Additionally, the nanocomposites demonstrated a reduced dielectric constant and dielectric loss, indicating their potential for energy storage applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Manuel Haessner, Denis A. Vinnik, Rainer Niewa
Summary: The newly synthesized hexaferrite incorporates Pb2+ into the barium position, while iron and titanium fill octahedrally coordinated interstices in different ratios. Iron solely occupies tetrahedra and trigonal bipyramids. The compound exhibits ferrimagnetic behavior with a Curie temperature of 309.3 degrees C and undergoes a magnetic phase transformation to a ferromagnetic state at high magnetic field strengths and temperatures below -123 degrees C.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Sridhar Parida, Jyotirmayee Nanda, Biswaprakash Sarangi
Summary: This work investigates the structural, optical, and magnetic properties of sol-gel synthesized Eu-Mg doped BiFeO3 nanoparticles. Mg2+ doping induces a structural phase transition and affects the shape and size of the nanoparticles. The doped samples exhibit a lower optical energy band gap and enhanced magnetization. These nanomaterials may also have potential applications as photocatalysts.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Tariqul Islam, Md Atiqur Rahman, Mandeep Jit Singh, Ismail Hossain, Mohamed S. Soliman, Sami H. A. Almalki, Haitham Alsaif, Md Samsuzzaman
Summary: In this study, flexible microwave substrates based on CaxZn(0.90-x)Ni0.10Fe2O4 nanopowders were prepared using the sol-gel method and their structural, morphological, and electromagnetic properties were investigated. A novel metamaterial unit cell was designed and fabricated to validate the application potential of the substrates in terms of dielectric constant, magnetic permeability, and loss tangent.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Ghulam Mustafa, Muhammad Khalid, Ali Dad Chandio, Kiran Shahzadi, Zaheer Uddin, Junaid Kareem Khan, Naimat Ullah Channa, Zaheer Abbas Gilani, H. M. Noor ul Huda Khan Asghar
Summary: A series of lanthanum-doped nickel ferrites were synthesized and their dielectric properties were studied. The results showed that the La doping induced lattice strain and affected the lattice constant, resulting in changes in dielectric loss and dielectric constant. The materials exhibited the most stable dielectric properties at high frequencies, making them potential candidates for microwave devices.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Pedro Augusto Machado Vitor, Janio Venturini, Joao Batista Marimon da Cunha, Carlos Perez Bergmann
Summary: Mixed nanoferrites with varied compositions were synthesized using a nitrate/citrate sol-gel method. The different samples exhibited unique magnetic behaviors, with nickel ferrite showing soft magnetic properties and cobalt ferrite showing hard magnetic properties. The magnetic hardening upon Co2+ substitution was attributed to an increase in anisotropy energy and a decrease in inversion degree.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Gadudhula Ganesh, Andem Sandeep, Gugulothu Chanti, Rapaka S. C. Bose, Maringanti Sravan Kumar, K. N. Prasanna Kumari, Thangalapally Shekharam, Y. Vasudeva Reddy, Jyotirmayee Satapathy, Dharavath Rajeshwari, Pavan Kumar Naini
Summary: Spinel ferrites with the compositional formula Ni0.8Zn0.2Fe2-xDyxO4 (x = 0, 0.004, 0.008, 0.012, 0.016) were prepared using the sol-gel method. The X-ray diffraction measurements confirmed the cubic spinel structure of the samples. Morphological analysis revealed spherical shaped particles. Thermogravimetric analysis showed the temperature changes and energy dispersive X-ray spectroscopy confirmed the elemental composition. Fourier-transform infrared spectroscopy revealed the various bonds present in the compounds. The UV-vis absorption spectrum indicated energy gap values, which decreased slightly with increased Dy concentration. Raman spectroscopy studied the crystal distortion and phases, and magnetic measurements observed the effect of Dy doping on magnetic properties.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ensi Cao, Aiting Wu, Huihui Wang, Yanrong Qin, Yongjia Zhang, Wentao Hao, Li Sun
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2019)
Correction
Materials Science, Multidisciplinary
Li Sun, Qing Ni, Jianqin Guo, Ensi Cao, Wentao Hao, Yongjia Zhang, Lin Ju
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Qing Ni, Li Sun, Ensi Cao, Wentao Hao, Yongjia Zhang, Lin Ju
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Ensi Cao, Guoqing Song, Zhaoqing Guo, Yongjia Zhang, Wentao Hao, Li Sun, Zhongquan Nie
Article
Materials Science, Ceramics
Ensi Cao, Yibiao Feng, Zhaoqing Guo, Huihui Wang, Guoqing Song, Yongjia Zhang, Wentao Hao, Li Sun, Zhongquan Nie
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Yongjia Zhang, Xiuli Zhao, Wentao Hao, Li Sun, Ensi Cao
Article
Chemistry, Analytical
Ensi Cao, Zhaoqing Guo, Guoqing Song, Yongjia Zhang, Wentao Hao, Li Sun, Zhongquan Nie
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Materials Science, Multidisciplinary
Yixuan Zhang, Li Sun, Zhichao Yu, Zhongquan Nie, Ensi Cao
Summary: LaFeO3 nanoparticles were synthesized and mixed with PANI powders to form PANI-LaFeO3 nanocomposites. The sensors based on these nanocomposites showed improved acetone sensing performance, which can be attributed to the increased amount of oxygen adsorbed on the surface of LaFeO3 nanoparticles and the enhanced carrier transfer within the nanocomposites.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jiangpeng Zhao, Li Sun, Ensi Cao, Wentao Hao, Yongjia Zhang, Lin Ju
Summary: Strontium (Sr) doping in CaCu3Ti4O12 (CCTO) ceramics improves dielectric properties and breakdown electric field, with reduced dielectric loss. This suggests that Sr doped at the Ca2+ site enhances the applicability of CCTO and can be used in future practical research.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jiangpeng Zhao, Li Sun, Ensi Cao, Wentao Hao, Yongjia Zhang, Jianbin Chen, Lin Ju
Summary: The addition of SrTiO3 (STO) can greatly improve the dielectric properties and nonohmic characteristics of CaCu3Ti4O12 (CCTO) ceramics.
CURRENT APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Fei Ma, Li Sun, Jinmiao Han, Ensi Cao, Yongjia Zhang, Lin Ju
Summary: Ni0.5-xMgxZn0.5Fe2O4 (x = 0.00, 0.05, 0.10 and 0.15) samples were prepared by the sol-gel method. The samples were characterized by various techniques, and the results showed that the samples were pure and had increased grain size with Mg2+ doping. VSM analysis revealed an increase in saturation magnetization (Ms) with Mg2+ doping. The samples also exhibited dielectric behavior and favorable nonlinear optical absorption characteristics. These findings suggest potential applications in high-density recording media and optical limiting devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Linjie Wu, Ensi Cao, Yongjia Zhang, Li Sun, Bing Sun, Zhichao Yu
Summary: Cubic-rhombohedral-In2_2xLaxFexO3 (x = 0, 0.03, and 0.05) composites were prepared using a hydrothermal method. The composites consisted of In2O3 nanoparticles in the cubic phase, but introducing La and Fe ions promoted the growth of rhombohedral-In2O3 nanosheets, forming a fuzzy walnut-like hierarchical structure. The La and Fe co-doped composites showed higher BET surface area and relative contents of surface In+ ions and OV. The enhanced surface reactivity and efficient hetero-junction between cubic-In2O3 and rhombohedral-In2O3 in In1.90La0.05Fe0.05O3 resulted in highly sensitive and selective detection of acetone.
Article
Materials Science, Multidisciplinary
Ensi Cao, Yixuan Zhang, Yongjia Zhang, Wentao Hao, Bing Sun, Li Sun
Summary: In this study, commercial TiO2 nanoparticles were used as additives and directly mixed with LaFeO3 nanoparticles to prepare TiO2-LaFeO3 nanocomposites. The resulting nanocomposites showed higher surface reactivity and oxygen vacancy contents compared to pure LaFeO3 nanoparticles, and the introduction of TiO2 facilitated the formation of p-n heterojunctions. Therefore, TiO2-LaFeO3 nanocomposites demonstrated enhanced acetone sensing performance.
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)
