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Accelerated design for magnetocaloric performance in Mn-Fe-P-Si compounds using machine learning

Journal of Materials Science & Technology 2022年第1期96卷 241-247页

作者： Defang Tu Jianqi Yan Yunbo Xie Jun Li Shuo Feng Mingxu Xia Jianguo Li Alex Po Leung School of Material Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Macao University of Science and Technology MacaoChina Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming Shanghai 200240China School of Engineering University of LeicesterLeicester LE17RHUnited Kingdom

magnetocaloric performance is of vital importance for Mn-Fe-P-Si ***,when processes and compositions are considered,designing alloys with large magnetic entropy changes(ΔS_(m)),low thermal hysteresis(ΔT_(hys)),and Curie temperatures(T_(C))around room temperature become relatively *** this study,we adopt machine learning methods to predict the magnetocaloric performance of Mn-Fe-P-Si compounds for the first *** achieve this goal,503,465,and 660 data points for datasets with T_(C),ΔT_(hys),andΔS_(m)are collected,*** collected datasets contain parameters of compositions,preparations,heat treatment,and magnetic field *** search for the optimal configuration using various methods and also compare their mean squared errors(MSE)and allowable *** results show that the performance of neural networks(NNs)is better than other ***,we select NN to explore the T_(C),ΔT_(hys),andΔS_(m)values as a function of Mn,Si,metal/non-metal ratios,and B(Boron).We also propose to use the composition window with excellent magnetocaloric *** results not only help us gain deep insights into Mn-Fe-P-Si alloys but also accelerate the design process of alloys suitable for magnetocaloric *** work has the potential to solve the challenges and boost the research of Mn-Fe-P-Si alloys.

关键词： Mn-Fe-P-Si alloy Material design magnetocaloric performance Machine learning Neural network

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Atomic-resolution Interfacial Microstructure and Thermo-electro-magnetic Energy Conversion performance of Gd/Bi0.5Sb1.5Te3 Composites

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Energy & Environmental Materials 2024年第4期7卷 355-363页

作者： Chengshan Liu Wenjie Xu Ping Wei Shaoqiu Ke Wenjun Cui Longzhou Li Dong Liang Xianfeng Ye Tiantian Chen Xiaolei Nie Wanting Zhu Wenyu Zhao Qingjie Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory

Thermo-electro-magnetic materials with simultaneously large magnetocaloric(MC) and thermoelectric (TE) effects are the core part for designing TE/MC all-solid-state cooling *** MC phase with TE material is an effective ***,the elemental diffusion and chemical reaction occurring at the two-phase interfaces could significantly impair the cooling performance.

关键词： interfacial reaction magnetocaloric performance thermoelectric performance thermo-electro-magnetic materials

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Exploration of the rare-earth cobalt nickel-based magnetocaloric materials for hydrogen liquefaction

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Journal of Materials Science & Technology 2023年第28期159卷 163-169页

作者： Yikun Zhang Jiayu Ying Xinqiang Gao Zhaojun Mo Jun Shen Lingwei Li School of Electronics and Information&Key Laboratory of Novel Materials for Sensor of Zhejiang Province Hangzhou Dianzi UniversityHangzhou 310012China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341119China

Magnetic refrigeration based on the magnetocaloric effect(MCE)of magnetic solids has been considered as an emerging technology for hydrogen ***,the lack of high-performance materials has slowed the development of any practical ***,we present a family of rare-earth cobalt nickel-based magnetocaloric materials,namely Dy_(1-x)Ho_(x)CoNi and Ho_(1-x)Er_(x)CoNi compounds,and system-atically investigated their structural and magnetic properties as well as the MCE and magnetocaloric *** of these compounds crystallize in the C15-type Laves-phase structure and undergo typi-cal second-order magnetic phase transition(MPT).The change in magnetism and the MPT temperature for the Dy_(1-x)Ho_(x)CoNi and Ho_(1-x)Er_(x)CoNi compounds originate from the exchange interactions between nearest-neighbor RE 3+ion *** hysteresis magnetocaloric effect was achieved,and the MPT tem-perature of these compounds could be tuned from the liquefaction temperature of nitrogen(∼77 K)to hydrogen(∼20 K)by adjusting the ratio of rare-earth *** study’s findings indicate that theDy_(1-x)Ho_(x)CoNi and Ho_(1-x)Er_(x)CoNi compounds are of potential for practical magnetic refrigeration applica-tions in the field of hydrogen liquefaction.

关键词： magnetocaloric effect Hydrogen liquefaction Rare earth magnetocaloric performance Magnetic refrigeration

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