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journal article·2020-02-01Open access

Magnetostructural transitions in V-doped MnCoGe compounds

J. H. Shi, H. G. Zhang, Imam Hidayah, B. T. Song, H. Yao, M. Yue, Z. Altounian

AIP Advances· Volume 10· Issue 2
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Source abstract

Abstract

MnCoGe1-xVx (x = 0.005, 0.01, 0.015, 0.02, 0.03, and 0.04) compounds were synthesized and investigated in view of the effect of transition metals on main-group-element sites to the magnetostructural transition. A small amount of V doping results in a decrease of the martensitic transformation temperature, while a further increase of V disturbs the Co-Ge bonds hence destabilizing the MM’X phase. Therefore, the transformation temperature returns to high temperature, and the expected Curie temperature window becomes incomplete. Accordingly, a large magnetic entropy change of about 10 J/kg·K and a refrigerant capacity of about 129.5 J/kg is obtained in the series.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Shape Memory Alloy Transformations · Advanced Thermoelectric Materials and Devices

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

Affiliations

College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology 1 , Beijing 100124, China

Physics Department and Centre for Physics of Materials, McGill University 2 , Montreal, Quebec H3A 2T8, Canada

Funding

General Program of Science and Technology Development Project of Beijing Municipal Education Commission of China · Program of top Disciplines Construction in Beijing · Natural Science Foundation of Beijing Municipality · Foundation for Innovative Research Groups of the National Natural Science Foundation of China

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