Giant low field magnetocaloric effect and magnetostructural coupling in MnCoGe1_xInx around room temperature

被引：18

作者：

Gao, Tian ^{[1
]}

Wu, Mei ^{[1
]}

Qi, Ningning ^{[1
]}

Zhou, Tao ^{[1
]}

Luo, Xiaojing ^{[1
]}

Liu, Yongsheng ^{[1
]}

Xu, Kun ^{[2
]}

Marchenkov, Vyacheslav V. ^{[3
,4
]}

Dong, Hongliang ^{[5
]}

Chen, Zhiqiang ^{[5
]}

Chen, Bin ^{[5
]}

机构：

[1] Shanghai Univ Elect Power, Dept Phys, Shanghai 200090, Peoples R China

[2] Qujing Normal Univ, Ctr Magnet Mat & Devices, Qujing 655011, Peoples R China

[3] MN Mikheev Inst Met Phys, Ekaterinburg 620137, Russia

[4] Ural Fed Univ, Ekaterinburg 620002, Russia

[5] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 753卷

基金：

中国国家自然科学基金;

关键词：

Magnetocaloric effect; Magnetostructural transitions; Martensitic transformations; MnCoGe alloys; Magnetization curves; PHASE-TRANSITIONS;

D O I：

10.1016/j.jallcom.2018.04.154

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：

Effects on substitution of Ge by In on structural and magnetic properties are studied in MnCoGe1_In-x(x) compounds. A small amount of In (2% and 5%) dopant can shift the martensite transformation temperature to room temperature and make it overlap with Curie temperature window, which results in a spin-lattice coupling and a large conventional magnetocaloric effect. Giant values of magnetic entropy change (Delta S-M) are obtained in both magnetizing and demagnetizing processes in the vicinity of the magnetostructural transition. The maximum values of|Delta S-M| for MnCoGe0.95In0.05 reach 21.4 and 25.4 J/ kg K for a small magnetic field change Delta H = 2-0 and 0-2 T, respectively, which make it promising for room temperature magnetic refrigeration applications.

引用

页码：149 / 154

页数：6

共 29 条

[1] Magnetostructural phase transitions and magnetocaloric effects in as-cast Mn1-xAlxCoGe compounds [J].

Aryal, Anil ;

Quetz, Abdiel ;

Pandey, Sudip ;

Samanta, Tapas ;

Dubenko, Igor ;

Hill, Margaret ;

Mazumdar, Dipanjan ;

Stadler, Shane ;

Ali, Naushad .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 709 :142-146

[2] Evolution of magnetostructural transition and magnetocaloric effect with Al doping in MnCoGe1-xAlx compounds [J].

Bao, L. F. ;

Hu, F. X. ;

Wu, R. R. ;

Wang, J. ;

Chen, L. ;

Sun, J. R. ;

Shen, B. G. ;

Li, L. ;

Zhang, B. ;

Zhang, X. X. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2014, 47 (05)

[3] Pressure-tuned magnetocaloric effect in Mn0.93Cr0.07CoGe [J].

Caron, L. ;

Trung, N. T. ;

Bruck, E. .

PHYSICAL REVIEW B, 2011, 84 (02)

[4] The magnetic and magnetocaloric properties of CoMnGe1-xGax alloys [J].

Dincer, I. ;

Yuzuak, E. ;

Durak, G. ;

Elerman, Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 588 :332-336

[5] Large reversible magnetocaloric effect in Ni-Mn-In-Co [J].

Gottschall, Tino ;

Skokov, Konstantin P. ;

Frincu, Bianca ;

Gutfleisch, Oliver .

APPLIED PHYSICS LETTERS, 2015, 106 (02)

[6] Microscopic mechanism of the giant magnetocaloric effect in MnCoGe alloys probed by x-ray magnetic circular dichroism [J].

Guillou, F. ;

Wilhelm, F. ;

Tegus, O. ;

Rogalev, A. .

APPLIED PHYSICS LETTERS, 2016, 108 (12)

[7] THOUSANDFOLD CHANGE IN RESISTIVITY IN MAGNETORESISTIVE LA-CA-MN-O FILMS [J].

JIN, S ;

TIEFEL, TH ;

MCCORMACK, M ;

FASTNACHT, RA ;

RAMESH, R ;

CHEN, LH .

SCIENCE, 1994, 264 (5157) :413-415

[8] THE ELECTRONIC-STRUCTURE OF COMNGE WITH THE HEXAGONAL AND ORTHORHOMBIC CRYSTAL-STRUCTURE [J].

KAPRZYK, S ;

NIZIOL, S .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 87 (03) :267-275

[9] Magnetic phase transitions and magnetocaloric effect of MnCoGe1-xSix [J].

Lai, J. W. ;

Zheng, Z. G. ;

Montemayor, R. ;

Zhong, X. C. ;

Liu, Z. W. ;

Zeng, D. C. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 372 :86-90

[10] Structural and magnetic properties of MnFe1-xCoxGe compounds [J].

Lin, Song ;

Tegus, O. ;

Bruck, E. ;

Dagula, W. ;

Gortenmulder, T. J. ;

Buschow, K. H. J. .

IEEE TRANSACTIONS ON MAGNETICS, 2006, 42 (11) :3776-3778

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