Journal
SCRIPTA MATERIALIA
Volume 194, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.113649
Keywords
Metamagnetic phase transition; Magnetic entropy change; Nonhysteresis; Magnetostriction
Categories
Funding
- National Natural Science Foundation of China [51971056]
- Fundamental Research Funds for the Central Universities [N20 090 01, N20 090 02, N2002005]
- Shenyang National Laboratory for Materials Science [18LHPY014]
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals [18LHPY014]
- open fundings of the State Key Laboratory of Solidification Processing in NWPU [SKLSP201803]
- State Key Laboratory for Mechanical Behavior of Materials [20202206]
- State Key Laboratory of Advanced Metals and Materials [2019-ZD07]
- Liaoning Revitalization Talent Program [XLYC1907175]
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A nonhysteretic metamagnetic phase transition was observed in the alloy Er2In0.8Al0.2 with enhanced magnetic entropy change and adiabatic temperature change. The origin of this unique phase transition is assumed to be from the field-induced reconstruction of 5d subband of rare-earth elements.
By hetero-structural alloying antiferromagnetic orthorhombic Er2Al and ferromagnetic hexagonal Er2In which both undergo the second-order phase transition, an unconventional nonhysteretic metamagnetic phase transition is observed at the critical composition of x = 0.2 in Er2In1-xAlx (0 <= x <= 0.4) system. The magnetic entropy change and adiabatic temperature change is enhanced to 16.9 Jkg(-1)K(-1) and 7.2 K in Er2In0.8Al0.2 with the largest saturation magnetostriction of -1117 ppm under 7 T. By correlating with specific heat and magnetotransport measurement, the origin of such unique nonhysteretic metamagnetism is assumed to be from the field-induced reconstruction of 5d subband of rare-earth elements. (C) 2020 Published by Elsevier Ltd on behalf of Acta Materialia Inc.
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