Article
Materials Science, Ceramics
Wiem Bouslama, Monaam Ben Ali, Nasr Sdiri, Habib Elhouichet
Summary: Fe doped ZnO nanocrystals synthesized from sol-gel method exhibit good crystalline quality and electrical properties, showing potential for energy storage applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Hamida Gouadria, Mourad Smari, Taoufik Mnasri, Jallouli Necib, Jesus Lopez Sanchez, Pilar Marin, Atul P. Jamale, Rached Ben Younes
Summary: The present study investigates the influence of Fe insertion on the physical properties of Ba0.95Bi0.05Ti1-xFexO3 (x = 0.025, 0.050, and 0.075) synthesized via sol gel method. The resulting samples exhibit tetragonal crystal structure with space group P4mm, and their morphological features suggest variations in microstructure with Fe content. The temperature-dependent dielectric constant shows two transition phases: ferroelectric-paraelectric transition phase (TF-P) and ferroelectric orthorhombic -ferroelectric tetragonal phase (TO-T). Analysis of conductivity curves using Jonscher's augmented equation (for x = 0.025) and Jonscher's power law (for x = 0.075) indicates the Non-Overlapping Small Polaron Tunneling (NSPT) model as the conduction mechanism.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yinying Zhang, Zhongrui Li, Ctirad Uher
Summary: Recent studies on Co3Sn2S2 have mainly focused on its electrical and magnetic properties as a Weyl semimetal, half metal, and anisotropic ferromagnet. This study investigates the low-temperature thermal characteristics of Fe-doped Co3Sn2S2, including heat capacity, Seebeck coefficient, and thermal conductivity. The results show that Fe-doping affects the Debye temperature and density of states at the Fermi level, as well as increases the Seebeck coefficient and suppresses the thermal conductivity. The study also explores the influence of an external magnetic field on the Seebeck coefficient and thermal conductivity of pristine Co3Sn2S2.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Jiangtao Fan, Yimeng Chen, Zhen Long, Gang He, Zhanggui Hu
Summary: This study successfully achieved a giant dielectric constant and high energy storage density by doping TiO2 ceramics with SiO2 nanoparticles. Notably, the HTTO - 5 wt% SiO2 composite ceramic exhibited low dielectric loss and ultrahigh permittivity at 1 kHz. Additionally, the ceramic showed excellent energy storage properties with high breakdown field strength and energy storage density.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
BeiBei Zhu, Cong Chen, ZhiChao Yao, JiaYi Chen, Chuang Jia, ZheHan Wang, RuoMing Tian, Li Tao, Feng Xue, HueyHoon Hng
Summary: The addition of multiple dopants to ZnO significantly reduces its thermal conductivity and improves its thermoelectric performance, leading to a zT value 2.4 times higher than undoped ZnO. This study demonstrates that multiple doped ZnO exhibits better thermoelectric properties than singly doped counterparts, providing an effective approach to enhance the thermoelectric performance of ZnO and other oxides.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Multidisciplinary Sciences
Yuguang Pu, Duncan Moseley, Zhen He, Krishna Chaitanya Pitike, Michael E. Manley, Jiaqiang Yan, Valentino R. Cooper, Valerie Mitchell, Vanessa K. Peterson, Bernt Johannessen, Raphael P. Hermann, Peng Cao
Summary: Researchers have developed a bottom-up method for synthesizing rocksalt high-entropy oxides (HEOs) containing Mn and Fe. They investigated the crystal structure and random cation-site occupancy of FeO-HEO, showing improved structural robustness and the viability of an oxygen sublattice as a buffer layer. Compositional analysis revealed the valence and spin state of the iron species, and the antiferromagnetic order of FeO-HEO below a transition temperature around 218 K was reported, along with predictions for the phase stability conditions of Mn and Fe-containing HEOs.
Article
Energy & Fuels
Ramesh Reddy Nallapureddy, Mohan Reddy Pallavolu, B. Hemanth Kumar, Rajasekhara Reddy Gutturu, Dhananjaya Merum, Anil Kumar Yedluri, Sang Woo Joo
Summary: Calcium and cobalt co-doped zinc oxide capsules (Ca-Co@ ZnO) fabricated through a single-step hydrothermal process exhibit outstanding supercapacitor performance, with specific capacitance 3.2, 1.7, and 1.6 times higher than pristine zinc oxide, calcium-doped zinc oxide, and cobalt-doped zinc oxide capsules, respectively. The Ca-Co@ZnO capsules also demonstrate excellent cycling stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Laya Dejam, Slawomir Kulesza, Jamshid Sabbaghzadeh, Atefeh Ghaderi, Shahram Solaymani, Stefan Talu, Miroslaw Bramowicz, Mitra Amouamouha, Amir Hossein Salehi Shayegan, Amir Hossein Sari
Summary: In this study, thin films of undoped ZnO, ZnO doped with Al, ZnO doped with Cu, and co-doped ZnO with Al and Cu were deposited on quartz substrates using RF sputtering. The samples were investigated for their advanced fractal features, crystalline structure, and optical properties. The results showed that the films had different morphologies and transmission spectra, with the co-doped sample exhibiting the highest transparency in the visible region and a desirable band gap.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Jiamei Liu, Yifu Jing, Decai Zhu, Yingbo Zhang, Xinfang Li, Xin Jia, Yuzhao Ouyang, Xiaowei Gao, Hongmei Luan, Ze Li, Chengjun Zhu
Summary: This study investigated the effects of a single B-site dopant (Fe) on the structure and oxygen reduction reaction of Ba(0.9)K(0.1)CoO3-delta (BKC) cathode material for LT-SOFCs. The BKFxC materials formed a cubic perovskite structure and showed higher electrocatalytic activity compared to other dopant concentrations. The BKF0.5C cathode achieved a higher power density and lower polarization resistance than the BKF0.6C cathode. Additionally, O-2-TPD and TG analysis characterized the valence of Fe and Co and the stable structure of the material. Overall, this study developed an efficient method for the innovative BKFC cathode.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Zenghua Xu, Ximing Zhang, Xufeng Yang, Youfang Yu, Hongjian Lin, Kuichuan Sheng
Summary: Corncob-derived Fe/N co-doped porous carbon spheres were successfully synthesized and optimized for superior ion transfer kinetics and rate performances, demonstrating high capacitance and supreme cyclability in supercapacitor applications. These properties were attributed to the unique packing architecture, developed micro-mesoporous structure, and multiple redox possibilities of the carbon spheres, showcasing potential for high-tech applications.
Article
Physics, Applied
Yifeng Wu, Preston C. Bowes, Jonathon N. Baker, Douglas L. Irving
Summary: The study presents a sophisticated model that reveals the defect mechanisms of electroceramics under high-temperature annealing and UV illumination, including the origin of brown photochromism and electrical resistance degradation in Fe-doped SrTiO3 materials.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Arulmani Marimuthu, Rajesh Narayana Perumal
Summary: This study grew neodymium doped Rubidium Titanyl Phosphate (RTP) single crystal using a high-temperature flux solution method, and observed improvements in material properties suitable for nonlinear optical applications on Nd doping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Dominika A. Buchberger, Piotr Garbacz, Krzysztof Slupczynski, Artur Brzezicki, Maciej Boczar, Andrzej Czerwinski
Summary: This study investigates the activation energy and ionic conductivity of Li6PS5Cl material for all-solid-state batteries using NMR spectroscopy and EIS. The results show that the activation energy values obtained from nuclear relaxation rates are lower than those from impedance measurements. The study also presents a new sample preparation method and discusses the significance of solid-state electrolyte thickness in solid-state battery design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Ramachandrapanicker Devi Chandra, Lalan Veena, Kunnel Gopalan Gopchandran
Summary: Cobalt (Co)-doped ZnO nanoparticles were synthesized at 100°C using a simple chemical technique, resulting in nanoparticles with high crystallinity and reduced defect density. Co-doping suppressed oxygen-vacancy-related defects at lower doping densities, but increased defect density at higher doping densities. Co-doping was found to significantly suppress defects in ZnO for electronic and optoelectronic applications, as demonstrated by XPS, PL, electrical conductivity, and Mott-Schottky analysis. Photodetectors fabricated with Co-doped ZnO nanoparticles showed faster response time due to the reduced defect density.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
H. H. Hegazy, C. Dinesh Sati, Pankaj Sharma, M. A. Jaafari
Summary: The study investigates the composition and temperature-dependent dc conductivity of (Ge20Se18Te62)100-xIx (x = 0 and 8) glasses, revealing the significant effect of iodine content on switching properties and the decrease in threshold voltage with changes in composition, while it increases with temperature and thickness changes. The threshold switching properties could have potential applications in high-speed electronic memory and selector devices.
CERAMICS INTERNATIONAL
(2021)
Article
Computer Science, Artificial Intelligence
Ghaith Jaradat, Masri Ayob, Ibrahim Almarashdeh
APPLIED SOFT COMPUTING
(2016)
Article
Physics, Multidisciplinary
M. Mossa Al-Sawalha, Ayman Al-Sawalha
Article
Materials Science, Textiles
Mohamed Gouda, Mohamed Abu-Abdeen
FIBERS AND POLYMERS
(2017)
Article
Metallurgy & Metallurgical Engineering
Osama Saber, Haifa Alomair, Mohamed Abu-Abdeen, Abdullah Aljaafari
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2018)
Article
Chemistry, Multidisciplinary
Jamal A. Talla, Ayman Sawalha, Hussien Sabbah
JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
(2014)
Article
Materials Science, Composites
Ayman S. Ayesh, S. S. Ibrahim, M. Abu-Abdeen
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2012)
Article
Materials Science, Composites
M. Abu-Abdeen, Ayman S. Ayesh, A. A. Aljaafari
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2013)
Article
Materials Science, Multidisciplinary
M. A. Ahmed, S. F. Mansour, S. I. El-Dek, M. Abu-Abdeen
MATERIALS RESEARCH BULLETIN
(2014)
Article
Materials Science, Composites
Mohammad Abu-Abdeen, Osama Saber, Javed Mazher, Mohamed M. Ahmed, Mohamed Gouda
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2020)
Article
Materials Science, Composites
Osama Saber, Mohammed Abu-Abdeen, A. Aljaafari, Javed Mazher, Mohamad M. Ahmed, Osama BoNagma
Summary: In this study, graphene sheets were exfoliated from graphite inside a polymer matrix solution in one step, leading to a cost-effective and efficient method for mass production. The maximum values for dielectric permittivity, dielectric loss, and alternating current electrical conductivity were observed at 10 minutes of exfoliation time. The elasticity modulus peaked at 30 minutes of exfoliation time, indicating optimal properties for the graphene-loaded polymer films.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2021)
Article
Computer Science, Information Systems
Muath Alali, Nurfadhlina Mohd Sharef, Masrah Azrifah Azmi Murad, Hazlina Hamdan, Nor Azura Husin
Article
Education & Educational Research
Khalid M. O. Nahar, Mohammed M. Abu Shquier, Izzat Alsmadi
INTERNATIONAL JOURNAL OF CONTINUING ENGINEERING EDUCATION AND LIFE-LONG LEARNING
(2016)
Article
Engineering, Electrical & Electronic
Khalid M. O. Nahar, Mohammed Abu Shquier, Wasfi G. Al-Khatib, Husni Al-Muhtaseb, Moustafa Elshafei
INTERNATIONAL JOURNAL OF SPEECH TECHNOLOGY
(2016)
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)