DataVXAPL MaterialsPaper
journal article·2019-09-01Open access

Cerium-based RCo5 (R = Ce, La0.35Ce0.65, and misch-metal) type nanocrystalline hard magnetic materials with high coercivity

Wen-Liang Zuo, Jeotikanta Mohapatra, J. Ping Liu, Tong-Yun Zhao, Feng-Xia Hu, Ji-Rong Sun, Yong-Feng Li, Xue-Feng Zhang, Bao-Gen Shen

APL Materials· Volume 7· Issue 9
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Source abstract

Abstract

Nanocrystalline RCo5 (R = Ce, La0.35Ce0.65, and misch-metal noted as MM) ribbons with hexagonal crystal structure and an average grain size of 5 nm have been prepared via a one-step melt-spinning technique. Coercivity as high as 13.0, 13.8, and 10.9 kOe has been obtained at 300 K for the CeCo5, La0.35Ce0.65Co5, and MMCo5 ribbons, respectively. High thermal stability is also achieved as shown by the high coercivity of 9.3 kOe, 10.2 kOe, and 8.8 kOe at 400 K for CeCo5, La0.35Ce0.65Co5, and MMCo5 ribbons, respectively. The coercivity mechanism is studied by magnetization analysis and microstructural observations. The nanocrystalline grains promote a strong exchange interaction, as indicated by the positive δM and the relatively high remanence ratio (∼0.8). In addition, the temperature dependence of coercivity of RCo5 ribbons shows the low coercivity temperature coefficient of −0.2% to −0.25%/K.
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Research context

Nanomaterials

OpenAlex topics: Magnetic Properties of Alloys · Rare-earth and actinide compounds · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Sciences, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China

Department of Physics, The University of Texas at Arlington, Arlington, Texas 76019, USA

State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China

School of Sciences, Inner Mongolia University of Science and Technology, Baotou 014010, People’s Republic of China

Funding

National key research and development program of China · China Postdoctoral Science Foundation · National Basic Research Program of China · National Natural Science Foundation of China

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