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Study on Vector magnetic Properties of magnetic materials Using Hybrid Hysteresis Model

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CES Transactions on Electrical Machines and Systems 2019年第3期3卷 292-296页

作者： Dandan Li Zhenyang Qiao Na Yang Yinmao Song Yongjian Li school of Building Environment Engineering Zhengzhou University of Light Industry ZhengzhouHenan450000China School of Building Environment Engineering Zhengzhou University of Light IndustryZhengzhouHenan450000China State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of TechnologyTianjin300130China

This paper presents a method to study the vector magnetic properties of magnetic materials under alternating and rotational magnetic field using 2-D vector hybrid hysteresis *** Preisach model and Stoner-Wohlfarth(S-W)model,the vector hybrid hysteresis model is established for magnetic *** alternating and rotational hysteresis properties are calculated under different excitation frequency,*** the computed results are compared with the experimental measurement *** is shown that the vector model can simulate the alternating and rotational magnetic properties effectively under low magnetization fields and low excitation frequency.

关键词： Hybrid hysteresis model magnetic materials vector magnetic properties.

The application of magnetic materials in fun products

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The application of magnetic materials in fun products

magnetic and magnetocaloric effect of Er_(20)Ho_(20)Dy_(20)Cu_(20)Ni_(20)high-entropy metallic glass

2008 IEEE 9th International Conference on Computer-Aided Industrial Design & Conceptual Design

作者： Yuning Zhu Department of Industrial design China Academy of art Hangzhou Ziying Xiong Department of Industrial design China Academy of art Hangzhou Yihao Zhu Department of Industrial Design Zhejiang University of Technology

＜正＞magnetic materials are of high percentage of technology with wide applications in various industries and *** product designing of today must not only meet the pragmatic demand of people but also the sentimental *** products have all the mood factors and designing metaphor meanings,endowing the products with more mental *** paper emphasizes the application of magnetic materials in fun products,discussing the combinations of these two in mental level and designing methods.

关键词： magnetic materials fun products designing methods.

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Chinese Physics B 2024年第5期33卷 602-606页

作者：于世霖田路王俊峰赵新国李达莫兆军李昺 Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China and School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang 110016China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China School of materials Science and Engineering Hebei University of TechnologyTianjin 300130China

Er_(20)Ho_(20)Dy_(20)Cu_(20)Ni_(20)high-entropy metallic glass exhibited excellent magnetic refrigeration material with a wide temperature range and high refrigeration capacity(RC)was ***_(20)Ho_(20)Dy_(20)Cu_(20)Ni_(20)high-entropy metallic glass was observed with typical spin glass behavior around 15.5 *** addition,we find that the magnetic entropy change(-△S_(M))originates from the sample undergoing a ferromagnetic(FM)to paramagnetic(PM)transition around 20 *** a field change from 0 T to 7 T,the value of maximum magnetic entropy change(-△S_(M)^(max))reaches 12.5 J/kg·K,and the corresponding value of RC reaches 487.7 J/kg in the temperature range from 6 K to 60 *** large RC and wide temperature range make the Er_(20)Ho_(20)Dy_(20)Cu_(20)Ni_(20)high-entropy metallic glass be a promising material for application in magnetic refrigerators.

关键词： magnetic materials magnetocaloric effect high-entropy metallic glass magnetic refrigeration large refrigeration capacity

Research progress of permanent ferrite magnet materials

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Journal of Central South University 2024年第6期31卷 1723-1762页

作者： XU Bin CHEN Yu-feng ZHOU Yu-juan LUO Bi-yun ZHONG Shou-guo LIU Xing-ao School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

Permanent ferrite magnet materials are extensively employed due to their exceptional magnetic properties and *** fast development in electromobile and household appliance industries contributes to a new progress in permanent ferrite *** paper reviews the deveolpement and progress of permanent ferrite magnet industry in recent *** emergence of new raw material,the advancement of perparation methods and manufacturing techniques,and the potential applications of permanent ferrite materials are introduced and ***,nanocrystallization plays a crucial role in achieving high performance at a low cost and reducing reliance on rare earth resources,and therefore it could be a promising development trendency.

关键词： permanent ferrite magnetic materials high-performance nanosizing

Large reversible magnetocaloric effect in antiferromagnetic Er_(3)Si_(2)C_(2) compound

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Journal of Rare Earths 2024年第8期42卷 1555-1559,I0005页

作者： Hao Sun Lu Tian Xinqiang Gao Zhaojun Mo Jun Shen Baogen Shen School of Rare Earths University of Science and Technology of ChinaHefei230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000China Department of Energy and Power Engineering School of Mechanical EngineeringBeijing Institute of TechnologyBeijing100081China

The magnetic properties,magnetic phase transition and magnetocaloric effects(MCE) of Er_(3)Si_(2)C_(2) compound were investigated based on theoretical calculations and experimental *** on the first principles calculations,the antiferromagnetic(AFM) ground state type in Er_(3)Si_(2)C_(2) compound was predicted and its electronic structure was *** experimental results show that Ei_(3)Si_(2)C_(2) compound is an AFM compound with the Neel temperature(T_(N) of 7 K and undergoes a field-induced firstorder magnetic phase transition from AFM to ferromagnetic(FM) under magnetic fields exceeding 0.6 T at 2 *** magnetic transition process of Er_(3)Si_(2)C_(2) compound was investigated and *** values of the maximum magnetic entropy change(-ΔS_(M)^(max)) and the refrigeration capacity(RC) are 17 J/(kg·K)and 193 J/kg under changing magnetic fields of 0-5 T,*** a potential cryogenic magnetic refrigerant,the Er_(3)Si_(2)C_(2) compound also provides an interesting research medium to study the magnetic phase transition process.

关键词： magnetic materials Magnetocaloric Metamagnetic transitions magnetic phase transition Rare earths

Structural Transformations and Multiferroic Properties of Bi_(1-x)Eu_(x)Fe_(0.95)Co_(0.05)O_(3)(x=0.05,0.10,0.15,and 0.20)

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Journal of Wuhan University of Technology(materials Science) 2024年第2期39卷 315-319页

作者：梁修乾李永涛 LIU Liqing GUO Aiqian LI Jianda ZHANG Hongguang College of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China College of Electronic Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China

Bi_(1-x)Eu_(x)Fe_(0.95)Co_(0.05)O_(3 )(x=0.05,0.10,0.15,and 0.20) nanoparticles were prepared through the sol-gel *** structure,local electronic structure,magnetic and electric properties were systematically investigated.X-ray diffraction data show(104),(110) bimodal alignment and high angular migration,indicating that with the increase of Eu substitution at Bi site,the structure of BFO undergoes a continuous change in crystal *** hysteresis loop and the FC/ZFC curve show how magnetism varies with the size of the field and ***,the causes of magnetic changes were analyzed by studying SXAS and hysteresis loops.

关键词： magnetic materials XAS electric structure magnetic property

magnetic properties of sputtered anisotropic Pr–Fe–B thin films with different structures and antiferromagnetic materials

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Rare Metals 2016年第12期35卷 926-929页

作者： Fang Yang Wei Liu Zhi-Dong Zhang Shenyang National Laboratory for materials Science Institute of Metal Research and International Centre for Materials PhysicsChinese Academy of Sciences Superconducting materials Research Center Northwest Institute for Nonferrous Metal Research

Anisotropic Pr-Fe-B films with soft-magnetic layer （Fe） and/or antiferromagnetic layer （Mn, FeMn or MnO） were prepared by direct-current （DC） magnetron sputtering on Si （100） substrates heated at 650℃. The influence of four types＇ different structures on the magnetic properties of Pr-Fe-B films was investigated. The phase and magnetic properties were characterized by means of X-ray diffraction （XRD） and superconducting quantum interference device （SQUID）. Addition of anti-ferromagnetic layer enhances both the coercivity and the remanence ratios of Pr-Fe-B films with suitable structures. The interface number increases and the antiferromagnetic-ferromagnetic exchange interaction is likely to become stronger, which affect the improvement of magnetic properties. To further understand the influence of structures with soft-magnetic Fe layer and/or antifer- romagnetic FeMn layer on the magnetic properties of Pr-Fe-B hard-magnetic films, the thickness of Pr-Fe-B layer was designed to decrease from 600 to 50 nm. The improvement of magnetic properties becomes obvious in Mo（50 nm）/Pr-Fe-B（25 nm）Mo（2 nm）FeMn（20 nm）Mo （2 nm）Pr-Fe-B（25 nm）/Mo（50 rim） film.

关键词： magnetic materials Thin films Coercivity Hysteresis loop Sputtering

Rapid screening of magnetic properties in several Fe-X-Ni systems via combinatorial materials chip method

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Journal of Materiomics 2023年第1期9卷 206-214页

作者： Cai Chen Xinyi Ji Jianhao Wang Mei Liu Yao Lu Xiaoping Wang Aimin Zhang Li Chen Xianping Dong Lanting Zhang Hong Wang materials Genome Initiative Center Shanghai Jiao Tong UniversityShanghai200240China School of materials Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China Yangtze River Delta Advanced materials Research Institute Suzhou215000China Sino-Precious Metals Holding Co. Ltd.Kunming650106China

Fe-X-Ni(X=Cr,W and V)combinatorial thin-film(∼100 nm thick)materials chips covering the full composition range of ternary systems were *** crystal structure distribution was mapped by micro-beam X-ray diffractometers(XRD)and the magnetic hysteresis loops over the chip were characterized by a high-throughput magneto-optical Kerr effect(HT-MOKE)system to establish the composition-phase-magnetic properties *** results showed that saturation magnetization for all systems has a strong dependency on alloying composition,and decreases with increasing dopped elements content as a general *** the trend of saturation magnetization in bulk is in good agreement with that from thin films,all bulk samples show almost no coercivity,attributable to the much smaller grain size,and stronger texture in thin-film *** the Fe-X-Ni systems under a similar condition,in the out-of-plane,Cr alloying obtained the largest coercivity(∼400 mT)followed by W alloying(∼300 mT)and then V alloying(∼200 mT).We suggest that alloying with different elements leads to the diverse orientation and crystallinity of the fcc phase resulting in different magnetic ***,the effect of heat treatment on magnetic properties indicates that saturation magnetization is more closely related to the duration of heat treatment.

关键词： Combinatorial materials chips Magneto-optical kerr effect magnetic materials High-throughput characterization Phase diagrams Thin films

Synthesis of magnetic two-dimensional materials by chemical vapor deposition

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Nano Research 2021年第6期14卷 1789-1801页

作者： Huaning Jiang Peng Zhang Xingguo Wang Yongji Gong School of materials Science and Engineering Beihang UniversityBeijing100191China

The development of magnetic two-dimensional(2D)materials in its infancy has generated an enormous amount of attention as it offers an ideal platform for the exploration of magnetic properties down to the 2D limit,paving the way for spintronic *** to the nonnegligible advantages including time efficiency and simplified process,the facile bottom-up chemical vapor deposition(CVD)is regarded as a robust method to fabricate ultrathin magnetic ***,some ultrathin magnets possessing fascinating properties have been successfully synthesized via ***,the recent researches toward magnetic 2D materials grown by CVD are systematically summarized with special emphasis on the fabrication ***,heteroatoms doping and phase transition induced in CVD growth to bring or tune the magnetic properties in 2D materials are *** and applications of these magnetic materials are also discussed and ***,some perspectives in need of urgent attention regarding the development of CVD-grown magnetic 2D materials are proposed.

关键词： two-dimensional materials magnetic materials chemical vapor deposition properties tuning