Enhance magnetocaloric effects in Mn1.15Fe0.85P0.52Si0.45B0.03 alloy achieved by copper-mould casting and annealing treatments

被引：23

作者：

Yu, H. Y. ^{[1
]}

Zhu, Z. R. ^{[1
]}

Lai, J. W. ^{[1
]}

Zheng, Z. G. ^{[1
]}

Zeng, D. C. ^{[1
]}

Zhang, J. L. ^{[2
]}

机构：

[1] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 649卷

关键词：

Transition-metal alloy; Annealing; Magnetocaloric effect; Phase transition; ENTROPY CHANGE; TRANSITION;

D O I：

10.1016/j.jallcom.2015.07.141

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Mn1.15Fe0.85P0.52Si0.45B0.03 rods were prepared by copper mould suction casting. The effects of heat treatments on the structure and magnetocaloric properties have been investigated. The X-ray diffraction patterns indicated that the annealed Mn1.15Fe0.85P0.52Si0.45B0.03 rods present hexagonal Fe2P-type structure with a small amount of Mn3Fe2Si3 impurity. With elevated annealing temperatures from 1123 K to 1423 K, the Curie temperature increases from 205 K to 251 K, the magnetic entropy change jumps from 0.6 to 19.8 J kg(-1)K(-1) under a magnetic field change of 0-2 T and the thermal hysteresis is reduced from 17 K to 10.5 K. Thus, the heat treatment is suggested to be an effective way to enhance the magnetocaloric effects of Mn1.15Fe0.85P0.52Si0.45B0.03 alloys. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1043 / 1047

页数：5

共 3 条

[1] Enhance magnetocaloric effects in Mn1.15Fe0.85P0.52Si0.45B0.03 alloy achieved by copper-mould casting and annealing treatments
Yu, H.Y.
Zhu, Z.R.
Lai, J.W.
Zheng, Z.G.
Zeng, D.C.
Zhang, J.L.
Journal of Alloys and Compounds, 2015, 649 : 1043 - 1047
[2] Investigation on magnetic phase transition for Mn1.15Fe0.85P0.55Si0.45 compound prepared by copper mould casting
Zhu, Zhong-Ren
Yu, Hong-Ya
Zheng, Zhi-Gang
Zhong, Xi-Chun
Liu, Zhong-Wu
Zeng, De-Chang
Kuang, Tong-Chun
Gongneng Cailiao/Journal of Functional Materials, 2015, 46 (08): : 08119 - 08123
[3] Influences of Sintering Temperature on the Microstructure and Magnetocaloric Effect of Mn1.15Fe0.85P0.65Si0.13Ge0.2B0.02 Prepared by Spark Plasma Sintering
Zhao, Z. R.
Jing, T.
Wang, G. F.
Yang, B. Y.
Zhang, X. F.
2018 IEEE INTERNATIONAL MAGNETIC CONFERENCE (INTERMAG), 2018,

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