Article
Chemistry, Multidisciplinary
Zhuohua Tang, Jian Zhuang, Alexei A. Bokov, Zeng Luo, Stanislav P. Kubrin, Igor P. Raevski, Ming Ma, Nan Zhang, Jie Zhang, Zenghui Liu, Wei Ren, Zuo-Guang Ye
Summary: Single crystals of the 0.5(Bi0.9Dy0.1)FeO3-0.5PbTiO(3) ternary system were successfully grown and characterized for their structure and ferroelectric properties using various techniques. The hierarchical domain configurations were revealed and explained based on mechanical/electrical compatibility principles. The findings suggest potential applications of the multiferroic perovskite solid solution in domain wall nanoelectronics.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Yang Yang, Hongxiang Zong, Jun Sun, Xiangdong Ding
Summary: Ripples are a class of native structural defects widely existing in 2D materials, and they have an impact on temperature-induced ferroic phase transition and stress-induced ferroic domain switching. Ripples stabilize short-range ferroic orders, increase transition temperature, and act as a source of dynamic random stress during domain switching.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Valeri Petkov, Adeel Zafar, Peter Kenesei, Sarvjit Shastri
Summary: Chemical compression effects on the ferroic orders in La substituted BiFeO3 were investigated using atomic pair distribution function analysis and structure modeling. The results showed that La substitution led to a reduction in lattice polarization, a strengthening of antiferromagnetic order, and a suppression of spin cycloid, resulting in nonzero magnetization. These changes in the ferroic orders were attributed to the chemical compression-induced alterations in octahedral rotation and ferroelectric displacement of Bi atoms, which acted as lattice degrees of freedom entangling the electronic and magnetic orders in BiFeO3.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Physics, Applied
Michael R. Walden, Cristian V. Ciobanu, Geoff L. Brennecka
Summary: This study validates the use of metrics of localized electronic states in predicting the trends in ferroic and dielectric properties of BiFeO3 and BiCrO3 under epitaxial strain using density-functional theory. The results suggest that localized electronic metrics can accurately predict the multiferroic characteristics of these systems, providing specific strain ranges.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Environmental Sciences
M. L. Aruna Kumari, L. Gomathi Devi, Gilberto Maia, Tse-Wei Chen, Nabil Al-Zaqri, M. Ajmal Ali
Summary: TiO2, ZnO, and SnO2 metal oxides were synthesized and heterojunctions were fabricated by combining TiO2 with either ZnO or SnO2 in a 1:1 ratio using mechanochemical ball milling process. The ternary heterojunctions showed enhanced photocatalytic activity, with TiO2(A)/TiO2(R)/ZnO heterojunction attributed to the formation of Ti3+-V-o defect states leading to efficient charge carrier separation. The ball milling process resulted in severe crystal deformation in TiO2 and ZnO lattices, creating crystal lattice distortion and defects due to valency mismatch between Ti4+ and Zn2+.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
L. V. Udod, S. S. Aplesnin, M. N. Sitnikov, E. V. Eremin, M. S. Molokeev, A. V. Shabanov, O. B. Romanova, A. M. Kharkov
Summary: A Bi2Fe4O9/BiFeO3 composite with a ratio of 67/33 has been synthesized and characterized. The average crystallite sizes for each phase were determined, and the magnetization hysteresis and disappearance temperature were established. The magnetic phase transitions of each phase were determined using infrared absorption spectra, and the correlation between the composite's structure and magnetic properties was studied.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Condensed Matter
Yan Wang
Summary: The structure of La doped BiFeO3 at low doping content is not completely the believed hexagonal R3c phase, but contains an orthorhombic crystal symmetry. Under certain pressure conditions, a phase transition sequence from hexagonal R3c phase to monoclinic C2/m phase and then to orthorhombic Pnma phase was observed in La-doped BiFeO3.
SOLID STATE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hu Cheng, Yixuan Xu, Xuefeng Zhou, Yu Gong, Dongliang Yang, Xiaodong Li, Yanchun Li
Summary: Over the past decade, external pressure has been found to play a crucial role in modulating the structures and properties of sesqui-chalcogenides. This research investigates pressure-induced structural phase transitions, alloying, and topological superconductivity in two ternary tetradymites, Bi2Te2Se and Bi2Se2Te. The study reveals novel structural transitions under pressure and the occurrence of superconductivity in one of the compounds.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Ting Shao, Hao-Fei Ni, Chang-Yuan Su, Qiang-Qiang Jia, Li-Yan Xie, Da-Wei Fu, Hai-Feng Lu
Summary: Organic-inorganic Hybrid (OIH) materials with excellent optoelectronic properties and good structural tunability have attracted enormous attention in recent years for multifunctional switchable applications. However, it remains challenging to fabricate a simple OIH compound with multiple properties. In this study, a compound with high phase transition temperature and semiconductor characteristics was successfully synthesized, exhibiting ferroelastic, narrow band gap, thermochromic, and dielectric properties. This compound can be considered as a rarely reported multi-functional ferroelastic material, inspiring broadening applications in the field of smart devices.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Fiza Mumtaz, Saadia Nasir, G. Hassnain Jaffari, S. Ismat Shah
Summary: This paper investigates the structural phase transformation, vibrational mode changes, and optical properties of BiFeO3 by substituting rare-earth ions, revealing different magnetic behaviors and weak ferromagnetism in BFO under the influence of chemical pressure and dopant ion concentrations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Valeri Petkov, Sarvjit Shastri
Summary: Finite size effects on ferroic orders in BiFeO3 were studied, finding that nanoparticles smaller than 62 nm preserve their polar rhombohedral structure and develop ferromagnetism, enhancing magnetoelectric coupling. However, nanoparticles smaller than 17 nm become nonpolar cubic, ceasing to exhibit both ferroelectricity and ferromagnetism simultaneously.
Article
Chemistry, Physical
Shuai Cheng, Boping Zhang, Shengjie Ai, Hongbao Yu, Xin Wang, Jiahao Yang, Changrong Zhou, Jingtai Zhao, Guanghui Rao
Summary: The addition of Bi0.5Na0.5TiO3 in BiFeO3-BaTiO3 ceramics allows for the tuning of piezoelectric responses. By optimizing the composition, the ceramics show enhanced d33 and TC, making them potential candidates for lead-free piezoceramics at high temperatures.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yushui Tian, Yulu Zhou, Miao Zhao, Yifang Ouyang, Xiaoma Tao
Summary: The effect of Ce doping on the structure and oxygen defects of ferroelectric HfO2 was studied, and the optimal doping concentration for the formation of ferroelectric phase was determined. The mechanism of Ce doping and its role in promoting the formation of oxygen vacancies in HfO2 were also investigated.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
J. Blasco, G. Subias, M. L. Sanjuan, J. L. Garcia-Munoz, F. Fauth, J. Garcia
Summary: A study was conducted on the structural properties of RBaMn2O6 (R = La, Pr, and Nd) compounds using synchrotron radiation x-ray powder diffraction and Raman spectroscopy. Results showed that LaBaMn2O6 exhibited a ferromagnetic transition at low temperatures, while PrBaMn2O6 and NdBaMn2O6 displayed structural transitions coupled with an antiferromagnetic transition. The low-temperature phases of PrBaMn2O6 and NdBaMn2O6 were found to be orthorhombic, with unique symmetry properties revealed by Raman spectroscopy.
Article
Materials Science, Multidisciplinary
Xianghan Xu, Fei-Ting Huang, Alemayehu S. Admasu, Marie Kratochvilova, Ming-Wen Chu, Je-Geun Park, Sang-Wook Cheong
Summary: This study investigates the hierarchical phase transitions, microscopic domain structures, and resulting magnetoelectricity of BaCoSiO4, a chiral antiferromagnet. The study reveals the development of two different structural chiralities and their coupling, as well as the existence of magnetic chirality and its magnetic field tunable toroidal magnetoelectricity. The unique properties of BaCoSiO4 offer possibilities for exploring the coupling of multiple ferroic degrees of freedom.
Article
Chemistry, Multidisciplinary
Rama K. Vasudevan, Hamidreza Khassaf, Ye Cao, Shujun Zhang, Alexander Tselev, Ben Carmichael, M. Baris Okatan, Stephen Jesse, Long-Qing Chen, S. Pamir Alpay, Sergei V. Kalinin, Nazanin Bassiri-Gharb
ADVANCED FUNCTIONAL MATERIALS
(2016)
Article
Physics, Applied
N. Khakpash, H. Khassaf, G. A. Rossetti, S. P. Alpay
APPLIED PHYSICS LETTERS
(2015)
Article
Materials Science, Multidisciplinary
H. Khassaf, N. Khakpash, S. Vijayan, M. Aindow, S. P. Alpay
Article
Physics, Applied
N. M. Sbrockey, T. S. Kalkur, A. Mansour, H. Khassaf, H. Yu, M. Aindow, S. P. Alpay, G. S. Tompa
APPLIED PHYSICS LETTERS
(2016)
Article
Materials Science, Multidisciplinary
H. Khassaf, J. V. Mantese, N. Bassiri-Gharb, Z. Kutnjak, S. P. Alpay
JOURNAL OF MATERIALS CHEMISTRY C
(2016)
Article
Physics, Applied
H. Khassaf, T. Patel, S. P. Alpay
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Physics, Applied
H. Khassaf, N. Khakpash, F. Sun, N. M. Sbrockey, G. S. Tompa, T. S. Kalkur, S. P. Alpay
APPLIED PHYSICS LETTERS
(2014)
Article
Chemistry, Analytical
Mohammadreza Khodabakhsh, Ugur Unal
METHODS AND APPLICATIONS IN FLUORESCENCE
(2019)
Article
Chemistry, Physical
Hamidreza Khassaf, Srinivas K. Yadavalli, Onkar S. Game, Yuanyuan Zhou, Nitin P. Padture, Angus I. Kingon
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Hamidreza Khassaf, Srinivas K. Yadavalli, Yuanyuan Zhou, Nitin P. Padture, Angus I. Kingon
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Physics, Applied
K. Co, H. Khassaf, S. P. Alpay
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Chemistry, Physical
Panteha Toloueinia, Hamidreza Khassaf, Alireza Shirazi Amin, Zachary M. Tobin, S. Pamir Alpay, Steven L. Suib
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Roxana E. Patru, Hamidreza Khassaf, Iuliana Pasuk, Mihaela Botea, Lucian Trupina, Constantin-Paul Ganea, Lucian Pintilie, Ioana Pintilie
Summary: The study investigated the frequency and temperature dependence of dielectric properties of CH3NH3PbI3 (MAPI) crystals, providing evidence for the existence of ferroelectricity and enhancing the understanding of thermally activated conduction mechanisms. By correlating frequency-dispersive dielectric spectra with different transport regimes indicated by Nyquist plots and impedance spectroscopy, the research highlighted the dominant transport mechanisms associated with the bulk of the grains, their boundaries, and/or the electrodes' interfaces in various frequency and temperature ranges.
Article
Chemistry, Physical
Saba Taheri, Fatemeh Hosseinpour Motlagh, Sina Dehestanizad, Hossein Yahyaei, Amir Motallebzadeh, Ali Zarrabi, Abolfazl Golmohammadian Tehrani, Mohammadreza Khodabakhsh, Hesam Makki
Summary: In this study, mechanically stable and durable hydrophobic coatings with controlled surface chemistry were synthesized to achieve anti-soiling properties. The results showed a clear correlation between the surface free energy and the anti-soiling properties, and the FAS-based coatings exhibited superior durability against weathering.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Analytical
Parham Keshavarzi, Samira Abbasi-Moayed, Mohammadreza Khodabakhsh, Ugur Unal, M. Reza Hormozi-Nezhad
Summary: In this study, a colorimetric sensor array based on triangular silver nanoparticles (TSNPs) with time-dimension responses was developed. The sensor array utilized the diverse etching process of TSNPs in the presence of bromide (Br-), iodide (I-), and chloride (Cl-) ions, resulting in different color changes and colorimetric patterns for each ion. The developed sensor array showed successful discrimination and quantitative detection of the ions, as confirmed by analytical figures of merit and real water sample testing.
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)