Article
Chemistry, Physical
Anindityo Nugra Arifiadi, Kwang-Tak Kim, Inna Yusnila Khairani, Chang Bae Park, Kee Hoon Kim, Sang-Koog Kim
Summary: CoFe2O4-BiFeO3 (CFO-BFO) nanocomposites were synthesized using a combination hydrothermal/citric acid sol-gel method, resulting in high-purity crystalline nanocomposites. The sintered sample with a 2:2 ratio exhibited high magnetization value, indicating dipolar interaction between CFO and BFO. The results suggest a reliable magnetic-field control of electric polarization in these multiferroic CFO-BFO nanocomposites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zengpeng Li, Jianfeng Dai, Danqiang Huang, XinChao Wen
Summary: BiFeO3-(Co/Ni)Fe2O4 (BFO-(C/N)FO) multiferroic nanofibers were synthesized using a self-assembly coaxial electrospinning technique. The structure, properties, and effects of structural distortion and crystal phase on the ferroelectric and ferromagnetic behaviors were studied. The results indicate the significance of coupling of structural distortion and crystal phase in altering the properties of the nanofibers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Hyeon Jun Lee, Youngjun Ahn, Samuel D. Marks, Deepankar Sri Gyan, Eric C. Landahl, Jun Young Lee, Tae Yeon Kim, Sanjith Unithrattil, Sae Hwan Chun, Sunam Kim, Sang-Youn Park, Intae Eom, Carolina Adamo, Darrell G. Schlom, Haidan Wen, Sooheyong Lee, Ji Young Jo, Paul G. Evans
Summary: The study finds that optical excitation can generate ultrafast stress in the classical multiferroic material BiFeO3. The time scale of stress generation is determined by the dynamics of the excited electronic states and the coupling between electronic configuration and structure. The experimental results provide insights into stress generation mechanisms and point to new applications of nanoscale multiferroics and related ferroic complex oxides.
Article
Chemistry, Physical
Runqing Zhang, Peiju Hu, Lingling Bai, Xing Xie, Huafeng Dong, Minru Wen, Zhongfei Mu, Xin Zhang, Fugen Wu
Summary: In this study, two new stable BiFeO3 structures with large spontaneous polarization were found using an ab initio evolutionary algorithm. The discovery expands the structural diversity of BiFeO3 and holds constructive significance for the study of spontaneous polarization in new structures of multiferroic materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Wan-Rong Geng, Yun-Long Tang, Yin-Lian Zhu, Yu-Jia Wang, Bo Wu, Li-Xin Yang, Yan-Peng Feng, Min-Jie Zou, Tong-Tong Shi, Yi Cao, Xiu-Liang Ma
Summary: This study demonstrates the existence of multi-field-driven magnetoelectric-optical coupling mediated by ferroelastic switching at room temperature. It provides a framework for designing potential multifunctional magnetoelectric devices.
ADVANCED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Manpreet Singh, Pooja Kumari, Kamal Kishore, K. C. Verma
Summary: The study on synthesized BiFe1-xMnxO3 (BFMO) samples reveals that Mn doping affects both the ferroelectric and magnetic properties of BiFeO3, enhancing its magnetoelectric coupling capabilities, making it a suitable candidate for magnetoelectric devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Fei Sun, Deyang Chen, Xingsen Gao, Jun-Ming Liu
Summary: BiFeO3, a single-phase multiferroic material, has various polymorphs and strong sensitivity to strain. Recent interest has been focused on emergent strain engineering in BiFeO3 thin films, using non-traditional methods to create new ground states and functionalities.
JOURNAL OF MATERIOMICS
(2021)
Article
Materials Science, Ceramics
Preethy Augustine, Narayana Yerol, Nandakumar Kalarikkal, B. Raneesh, M. T. Rahul, Sobi K. Chacko
Summary: The study developed nanocomposites with engineered multiferroic properties by combining soft ferromagnetic MnFe2O4 and ferroelectric BiFeO3. Characterization techniques such as XRD, FESEM, and HRTEM were used to analyze the crystallographic phase, structure, and morphology of the composites. The results demonstrate the potential application of these nanocomposites in magnetoelectric coupling, electrical performance, and magnetic response.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Depei Zhang, Sachith Dissanayake, Barry Winn, Masaaki Matsuda, Toshimitsu Ito, Randy Fishman
Summary: Polarized inelastic neutron-scattering experiments were conducted to investigate the anisotropic behavior of low-energy spin-wave excitations in a multiferroic BiFeO3. The study successfully separated magnetic excitation modes below 6 meV in and out of the cycloidal plane, and identified several magnon modes including two anisotropic modes that were previously observed using optical spectroscopies. The research also discovered other magnon modes that are not active in optical measurements.
Article
Materials Science, Multidisciplinary
John Mangeri, Davi Rodrigues, Monica Graf, Sudipta Biswas, Olle Heinonen, Jorge Iniguez
Summary: This paper proposes a continuum approach to study the magnetoelectric multiferroic BiFeO3, combining the ferroelectric phase field method and micromagnetic simulations. The modeling effort allows for the self-consistent description of the different order parameters on the same scale. The model is used to analyze the domain wall topology and the influence of FE domain boundaries on magnetic domain walls, as well as to simulate spin-wave transmission and magnetoelectric switching. The study provides insights for further research on nanostructures of BFO at the mesoscale.
Article
Physics, Multidisciplinary
P. Hemme, J-c. Philippe, A. Medeiros, A. Alekhin, S. Houver, Y. Gallais, A. Sacuto, A. Forget, D. Colson, S. Mantri, B. Xu, L. Bellaiche, M. Cazayous
Summary: This study investigates the effect of strain on the ferroelectricity and dynamic magnetic response of BiFeO3. The results show that the ferroelectric soft mode is significantly enhanced under tensile strain, and low energy magnon modes are suppressed, indicating a transition from cycloidal to homogeneous magnetic state. Effective Hamiltonian calculations reveal the competition between the ferroelectric and antiferrodistortive modes in the tensile regime.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
S. K. Mandal, P. Kiran, P. S. Rao, Amreesh Chandra
Summary: This study successfully synthesized 20 nm Sr2+-doped BiFeO3 nanostructures using Aloe vera juice as a biotemplate, achieving stable structures with homogeneous distribution. The researchers found that Aloe vera juice contains non-fibrous alcohol insoluble (NFAIR) residue rich in bioactive polymer, which can synergistically be used as a biotemplate. The growth mechanism of the nanostructures can be easily modulated by adjusting the concentration of the biotemplate. The synthesized Bi1-xSrxFeO3 nanostructures exhibit interesting structural, magnetic, optical, and magneto-dielectric properties, making them suitable for optical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Shashi Priya Balmuchu, Pamu Dobbidi
Summary: In this study, La-doped bismuth ferrite (BLFO) compositions were synthesized and their structural, electrical, magnetic, ferroelectric, and optical properties were investigated. It was found that La doping led to a reduced grain size, improved dielectric properties, enhanced magnetization and coercive field, higher polarization value, and increased bandgap with doping.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Ceramics
Manel Othman, Ikbel Mallek-Zouari, Hanene Akrout, Najeh Thabet Mliki
Summary: This study investigates the effect of cobalt doping on bismuth ferrite and finds that increasing the cobalt concentration during synthesis can significantly decrease the particle size and increase the band gap of the material. The application of the samples in the photodecomposition of methylene blue under direct sunlight irradiation demonstrates unusual results due to the unique sizes of the samples and the phenomena that can occur at that size scale.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Juan Liu, Zilong Yu, Xiangtai Guo, Liangliang Liu, Lilin Xiang, Yu Sun, Tulai Sun, Ailin Xia
Summary: The 0-3 type BFO-BTO/BaM multiferroic composites were successfully prepared, exhibiting improved ferroelectric and magnetic properties. The increase of BaM content led to a larger leakage current and a lower breakdown electric field, but also resulted in enhanced ferroelectric and magnetic properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Chia-Chuan Chen, Xiaoding Qi, Wei-Che Chang, Mu-Gong Tsai, In-Gann Chen, Cen-Ying Lin, Ping-Han Wu, Kuang-Po Chang
APPLIED SURFACE SCIENCE
(2015)
Article
Materials Science, Ceramics
Cheng-Chung Hsieh, Chii-Shyang Hwang, Chia-Hung Kuo, Xiao-ding Qi, Chun-Lung Hsiao
CERAMICS INTERNATIONAL
(2015)
Article
Materials Science, Ceramics
Yu-Ling Liang, Shih-Zong Lu, Hsin-Ying Lee, Xiaoding Qi, Jow-Lay Huang
CERAMICS INTERNATIONAL
(2015)
Article
Materials Science, Multidisciplinary
Chun-Lung Hsiao, Xiaoding Qi
Article
Materials Science, Multidisciplinary
Shih-Zong Lu, Xiaoding Qi
JOURNAL OF MATERIALS CHEMISTRY C
(2016)
Article
Chemistry, Physical
Shih-Zong Lu, Xiaoding Qi
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Physical
Yu-Jhan Siao, Xiaoding Qi
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Materials Science, Multidisciplinary
Chen-Yuan Guo, Xiaoding Qi
MATERIALS & DESIGN
(2019)
Article
Materials Science, Ceramics
Chi-Chimg Yeh, Jhe-Wei Li, Guo-Sen Tu, Xiaoding Qi
Summary: The sintered CFO-KNN composites showed higher relative density when the volume fraction of KNN reached 50% or more. The highest relative density of 94% was obtained with the composites of 80 vol% KNN. Transmission electron microscopy did not observe any secondary phase at the interface between CFO and KNN grains. However, elemental analyses showed traces of interdiffusion of ions within the solubility limit of both lattices without segregation of other phases.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yi-Ping Luo, Mei-Jing Huang, Xiaoding Qi
Summary: In this study, epitaxial films of BiCuSeO were successfully grown on SrTtO(3) substrates with different orientations using RF magnetron sputter deposition. The orientation and growth rate of the films exhibited different patterns at different temperatures.
Article
Materials Science, Ceramics
Chieh-Jui Chang, Xiaoding Qi
Summary: In this study, BFO-STO-xKNN ceramics were synthesized and their microstructure and properties were analyzed. The experimental results showed that adding an appropriate amount of KNN can change the grain size and lattice parameter of the material, and also have a significant impact on its dielectric response and conductivity. Among them, the x=0.01 KNN sample showed a high recoverable energy density and efficiency at an applied field of 273 kV/cm.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Tzu-Chiao Lin, Xiaoding Qi
Summary: The study investigated the mixed valences and oxygen vacancies in Eu1-xBaxTi1-yMyO3 materials, as well as the impact of Co2+/Ni2+ co-doping on the material properties. Sintered at 1400 degrees Celsius, the Co2+/Ni2+ co-doping in Eu1-xBaxTi1-yMyO3 materials can result in a transition from antiferromagnetic to ferromagnetic, possibly due to the asymmetric distortion of the Eu-O polyhedron.
Article
Materials Science, Multidisciplinary
Edmund H. H. Lim, Josephine Y. C. Liew, M. M. Awang Kechik, S. A. Halim, S. K. Chen, K. B. Tan, X. Qi
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2017)
Correction
Materials Science, Ceramics
Shih-Zong Lu, Xiaoding Qi
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2015)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)