Article
Environmental Sciences
Umesh Chejara, Anamika Prajapati, Arvind Kumar
Summary: This study synthesized and characterized nano-particles of polycrystalline magnesium and iron ferrite doped with rare earth materials. The electrical properties of these materials were measured, and it was found that they exhibit variation behavior with respect to frequency. The study suggests that these materials may have potential applications in the fabrication of microwave antennas to reduce energy losses.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Textiles
Yaya Zhang, Jiyong Hu, Xiong Yan, Huating Tu
Summary: The thickness and dielectric properties of fabric substrate are crucial in the design of wearable antennas, with a thicker substrate with low dielectric constant and high loss tangent enhancing antenna bandwidth. Sewing multiple fabrics together can increase thickness while maintaining flexibility, but controlling dielectric properties is challenging due to the lack of relationship between materials. A proposed circuit model was used to establish equivalent capacitance and resistance models for sewed multilayer fabric to predict its loss tangent, showing good agreement with experimental results and providing a basis for multilayer flexible electronic substrate design.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Materials Science, Ceramics
M. D. Hossain, A. Masud, M. N. I. Khan, S. S. Sikder
Summary: Nanostructured Bi0.9Eu0.1FeO3 (BEFO), Ni0.6Zn0.4Fe2O4 (NZF), and (1-x).BEFO + x.NZF composites have been synthesized and characterized. The addition of NZF content in the composites modified their magnetic and dielectric properties. The optimized 0.9 BEFO + 0.1 NZF composite showed the highest permeability and dielectric values with the least amount of losses.
CERAMICS INTERNATIONAL
(2023)
Article
Instruments & Instrumentation
Haiping Zhou, Yanjun Wang, Yuexin Gao, Ze Zhang, Siyu Liu, Yanyan Wang, Meijie Yu, Xianming Wang, Chengguo Wang
Summary: This study prepared composite coatings with low infrared emissivity and low dielectric properties using modified EPDM as binder. Appropriate grafting modification significantly improved the mechanical properties of the composite coatings. The effects of grafting modification on the infrared emissivity and dielectric properties were minimal. The study revealed the mechanism of improved compatibility and interfacial bonding between filler and binder due to grafting modification.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Theeranuch Nachaithong, Pairot Moontragoon, Prasit Thongbai
Summary: The (Zn, Nb)-codoped TiO2 nanopowder and ceramic with highly dense microstructure were successfully synthesized. The ZNTO ceramic exhibited thermally activated giant dielectric relaxation, and the outer surface layer had a slight effect on the dielectric properties. Theoretical calculations revealed the presence of specific defect clusters, supporting the absence of electron-pinned defect-dipoles and suggesting an alternative mechanism for the giant dielectric properties.
Article
Computer Science, Information Systems
Jurgen K. A. Nogueira, Joao G. D. Oliveira, Samuel B. Paiva, Valdemir P. Silva Neto, Adaildo G. D'Assuncao
Summary: A sensor is proposed to characterize the complex permittivity of dielectric materials in a non-destructive and non-invasive way. The sensor is based on a rectangular patch microstrip two-port circuit with a complementary split-ring resonator (CSRR) element. The sensitivity analysis is determined by varying the permittivity of the material under test (MUT). The proposed sensor is simulated and analyzed using Ansoft HFSS software, and the results show good agreement with measurements made on two different dielectric material samples with known complex permittivity values.
Article
Environmental Sciences
RubalyaValantina Sathianathan, Aniruthaan Kannapiran, Natarajan Shanmugam
Summary: The study analyzed the oxidative stability of groundnut oil and mustard oil blended with varying concentrations of alpha-tocopherol and TBHQ, finding that these antioxidants have a regulating effect on the insulation nature of the oil, with alpha-tocopherol showing a more effective synergistic effect. Higher breakdown voltage and greater stability were observed in oils with the addition of antioxidants in low concentrations, with potential implications for selecting eco-friendly coolants in engineering and industry.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Computer Science, Information Systems
Longzhu Cai
Summary: This paper introduces an embedded resonator method for microwave substrate characterization, which can calculate the effective dielectric constant of the structure and substrate, and determine quality factors. Experimental results show that the method has high extraction accuracy.
Article
Nanoscience & Nanotechnology
Azim Uddin, Diana Estevez, Rabia Khatoon, Faxiang Qin
Summary: With the miniaturization and integration of electronic components, the demand for low-cost flexible composites with temperature-stable high dielectric constant and low loss has increased. This study developed silicone elastomer composites based on hydrothermally grown MoS2 on tissue paper-derived cellulose carbon (CC). The composites showed high dielectric constant and low loss, as well as flexibility and temperature stability, making them attractive for microstrip antenna applications and extreme environment electronics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Condensed Matter
B. Trinadh, J. Suresh, G. R. Patta, K. Vijaya Babu, Ch Komali, B. Vikram Babu, K. Anjani Devi, B. Sathish Mohan, K. Samatha
Summary: In this study, Co0.7Cu0.2Zn0.1Fe2-xAlxO4 nano-ferrites were synthesized using sol-gel auto-combustion process, and their structural, optical, electrical and magnetic properties were systematically characterized. The results showed that these nano-ferrites exhibit strong electrical and magnetic properties as well as structural stability.
SOLID STATE COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jutapol Jumpatam, Jakkree Boonlakhorn, Bundit Putasaeng, Narong Chanlek, Prasit Thongbai
Summary: The study investigated the phase formation, microstructural, dielectric properties, and nonlinear behaviors of (Na1/3Ca1/3Yb1/3)Cu3Ti4O12 ceramics, showing good dielectric performance and nonlinear behavior. Analysis revealed that the presence of Cu+, Cu2+, and Ti3+ ions might be the major cause of its n-type semiconductor nature inside the grains.
SOLID STATE SCIENCES
(2022)
Article
Instruments & Instrumentation
Yanjun Wang, Haiping Zhou, Yuexin Gao, Ze Zhang, Siyu Liu, Sijia Zhong, Meijie Yu, Jianjun Liu, Chengguo Wang
Summary: In this study, a composite coating with low infrared emissivity and high radar wave transmittance was prepared by sol-gel method. By adjusting the thickness of the surface modification layer of the floating aluminum powder, the dielectric constant and dielectric loss tangent values of the composite coating were significantly reduced. At a TEOS addition amount of 1g, a composite coating with an infrared emissivity of less than 0.6 was obtained.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Polymer Science
Sebastian Bonardd, Cesar Saldias, Angel Leiva, David Diaz Diaz, Galder Kortaberria
Summary: Polymethacrylates containing sulfonyl and nitrile functional groups were successfully prepared via conventional radical polymerization and RAFT, with thermal and dielectric properties evaluated based on differences in molecular weights and dispersity. Despite variations in properties, all polymers exhibited high dielectric performance, making them suitable candidates for energy storage applications.
Article
Materials Science, Multidisciplinary
Ch. Rambabu, Susmitha Uppugalla, Ritesh Verma, A. Ramakrishna, N. Murali, Ch. Shivanarayana, D. Parajuli, B. Suryanarayana, Khalid Mujasam Batoo, Sajjad Hussain, P. V. Lakshmi Narayana
Summary: Sol-gel auto combustion method was used to synthesize M-type La3+ and Ni2+ substituted strontium nano-hexaferrite powders (Sr1-xLaxFe12-yNiyO19, where x = y = 0.0, 0.05, 0.1, 0.15, and 0.2) successfully. The prepared powders were sintered at 1200 degrees C for 2 h. Various characterization techniques were employed to investigate the structural, morphological, magnetic, and dielectric properties of the samples at room temperature.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Ceramics
L. V. Rychkova, N. A. Sekushin, S. V. Nekipelov, B. A. Makeev, A. V. Fedorova, R. I. Korolev, N. A. Zhuk
Summary: Two series of pyrochlore-structured solid solutions, Bi2Mg1-xCoxNb2O9 and Bi2MgNb2-2xCo2xO9-8, were synthesized. The study showed the formation of solid solutions and fixed foreign phases in the samples, with cobalt atoms mainly in the charge state of Co(II) in monomers and exchange-bound clusters with antiferromagnetic exchanges. The ceramics exhibited high dielectric permeability, low dielectric losses, and potential applications in multilayer ceramic capacitors.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Ishita Yellapurkar, Sonal Bhabal, M. M. V. Ramana, Kundan Jangam, Vaibhav Salve, Sunil Patange, Paresh More
Summary: Magnetically separable magnesium ferrichromate nanoparticles were synthesized via aqueous combustion synthesis, showing single-phase cubic structure and superparamagnetic behavior. These nanoparticles were used as a heterogeneous catalyst in the synthesis of pyrano[2,3-c]pyrazole derivatives, demonstrating advantages of short reaction time, high yield, easy product separation, environmentally safer conditions, and retention of catalytic activity.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Materials Science, Ceramics
Anil B. Mugutkar, Shyam K. Gore, Sunil M. Patange, Rajaram S. Mane, Siddheshwar D. Raut, Shoyebmohamad F. Shaikh, Mohd Ubaidullah, Bidhan Pandit, Santosh S. Jadhav
Summary: This work reports the magnetic permeability and ammonia gas sensing characteristics of La(3+)substituted Co-Zn nano ferrites. X-ray diffraction and scanning electron microscopy confirm the single-phase spinel structure and the morphology of nanocrystals. Nitrogen adsorption-desorption isotherms and X-ray photoelectron spectroscopy reveal the porous structure and oxidation states of the ferrites. Gas sensing performance analysis shows that the Co-Zn-La ferrite with controlled La composition can be used as an effective ammonia gas sensing material.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ravindra N. Kambale, Krishnakumar M. Sagar, Sunil M. Patange, Sagar E. Shirsath, K. G. Suresh, Vaishali A. Bambole
Summary: Nd3+-substituted Ni-Zn ferrite nanoparticles were synthesized using the sol-gel autocombustion technique, and a nanocomposite with polyaniline (PANI) was prepared through in situ polymerization. The microwave absorbing properties of both the ferrite nanoparticles and the ferrite/PANI nanocomposite were investigated, showing that the nanocomposite has excellent absorption properties for incident microwaves.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yassine Slimani, Munirah A. Almessiere, Sadik Guner, Bekir Aktas, Sagar E. Shirsath, Maxim Silibin, Alex Trukhanov, Abdulhadi Baykal
Summary: This study compared the structure, morphology, optical, and magnetic properties of Er3+ and Sm3+ codoped CoFe2O4 nanospinel ferrite synthesized via hydrothermal and sonochemical methods. The results showed that the distribution of cations and the variation in crystallite/particle sizes are key factors in controlling the intrinsic properties of the samples.
Expression of Concern
Engineering, Electrical & Electronic
Supriya R. Patade, Deepali D. Andhare, Mangesh V. Khedkar, Swapnil A. Jadhav, K. M. Jadhav
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Shyam K. Gore, Umakant B. Tumberphale, Santosh S. Jadhav, Shoyebmohamad F. Shaikh, Abdullah M. Al-Enizi, Abu ul Hassan S. Rana, Ravindra N. Khule, Siddheshwar D. Raut, Tanay S. Gore, Rajaram S. Mane
Summary: This study investigates the physical properties of La3+-doped Cu-Cd ferrites (CCF ferrites). The CCF ferrites, synthesized using the sol-gel method, exhibit a cubic spinel structure confirmed by Rietveld refinement. The morphology analysis reveals the presence of cubical and triangular crystallites. Increasing La3+ content enhances magnetic permeability and reduces magnetic loss. Moreover, increasing temperature leads to improved permeability. The increase in permittivity and decrease in ac conductivity can be attributed to an increase in grain size and a reduction in grain boundaries as explained by the Maxwell-Wagner model. The magnetic and electrical performance of CCF ferrites demonstrate their potential use in microwave devices and high-frequency applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Sagar E. Shirsath, M. Hussein N. Assadi, Ji Zhang, Nitish Kumar, Anil S. Gaikwad, Jack Yang, Helen E. Maynard-Casely, Yee Yan Tay, Jianhao Du, Haoyu Wang, Yin Yao, Zibin Chen, Jinxing Zhang, Shujun Zhang, Sean Li, Danyang Wang
Summary: Perovskite multiferroics have attracted significant attention in the development of multifunctional electronic devices. This study demonstrates the interface-driven multiferroicity in low-cost and eco-friendly bulk polycrystalline materials. The fabricated nanocomposites exhibit both room-temperature ferromagnetism and ferroelectricity, with a robust magnetoelectric coupling.
Article
Materials Science, Ceramics
A. D. Patil, S. M. Patange, Pradeep M. Dighe, Shoyebmohamad F. Shaikh, Abu Ul Hassan S. Rana, Bidhan Pandit, Santosh S. Jadhav
Summary: Ni0.4Cu0.3Zn0.3Fe2O4 ferrites with various compositions of Nb2O5 additive were synthesized by the sol-gel method. The addition of Nb2O5 increased the lattice parameter values and resulted in a single-phase spinel structure. Scanning electron microscope images showed spherical and cubic shapes of the ferrite samples with few agglomerations. Elemental analysis confirmed the stoichiometric occurrence of constituent elements. Raman and UV-Visible diffused reflectance spectroscopy results indicated that Nb2O5 additive can tune the optical and magnetic properties of the ferrite.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
U. K. Wadne, R. H. Kadam, K. M. Batoo, M. L. Mane, Sajjad Hussain, Sagar E. Shirsath, A. R. Shitre
Summary: The authors synthesized Eu-substituted Bi-Fe-Mn multiferroics and investigated the effects of different Eu doping concentrations on the crystal structure, magnetic and dielectric properties of the material.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
A. D. Patil, V. S. Hogade, V. S. Shinde, S. S. Desai, S. S. Jadhav, S. M. Patange
Summary: The influence of Nb2O5 additive on the elastic and dielectric properties of NiZnCu ferrite is studied. The elastic constants increase with the increase in Nb2O5 content. The dielectric parameters, such as dielectric constant and dielectric loss tangents, vary with frequency and Nb2O5 additive composition. The AC conductivity increases with frequency, but decreases with Nb2O5 additive.
INTEGRATED FERROELECTRICS
(2023)
Article
Chemistry, Multidisciplinary
Ram H. Kadam, Ravi Shitole, Santosh B. Kadam, Kirti Desai, Atul P. Birajdar, Vinod K. Barote, Khalid Mujasam Batoo, Sajjad Hussain, Sagar E. Shirsath
Summary: The stoichiometric compositions of a ferrite system with a chemical formula CoCr0.5DyxFe1.5-xO4 were prepared using the sol-gel auto-combustion method. The structural, morphological and magnetic properties were studied using various techniques. XRD analysis confirmed the cubic spinel structure of the samples. The cation distribution and magnetoelectric properties were also investigated.
Article
Materials Science, Ceramics
Varsha C. Pujari, Pramod D. Mhase, Rohini M. Mahindrakar, Sher Singh Meena, Sanjay R. Kamble, Sunil M. Patange, Santosh S. Jadhav
Summary: Different Nd doping concentrations of Ba-Ca hexaferrites were synthesized using sol-gel auto-ignition method. The results showed that Nd doping modulated the magnetic behavior of the hexaferrites, resulting in moderate saturation magnetization and high coercivity values.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
Sopan M. Rathod, Satish Gaikwad, Shyam K. Gore, Umakant B. Tumberphale, Shoyebmohamad F. Shaikh, Mohd Ubaidullah, Bidhan Pandit, Santosh S. Jadhav
Summary: The Ag+ doped nanocrystalline nickel ferrites, NiAgxFe2-xO4 (NAF) with x = 0-0.1 were synthesized using aloe vera extract as a solvent. XRD analysis confirmed the creation of spinel phase within the pristine Ni ferrite, with the presence of nano Ag particles in doped NAF. TEM analysis confirmed the nanocrystalline nature of the ferrites, while SEM analysis revealed the layered arrangement of spherical nanoparticles within the NAF crystals. The optical properties of NAF crystals showed a decrease in band gap energies with increasing Ag+ composition due to the contribution of delocalized electrons in direct optical transitions.
PHYSICA B-CONDENSED MATTER
(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)
