On the magnetocaloric effect in the multiferroic hexagonal DyMnO3 single crystals

被引：50

作者：

Balli, M. ^{[1
]}

Jandl, S. ^{[1
]}

Fournier, P. ^{[1
]}

Mansouri, S. ^{[1
]}

Mukhin, A. ^{[2
]}

Ivanov, Yu. V. ^{[2
]}

Salbashov, A. M. ^{[3
]}

机构：

[1] Univ Sherbrooke, Dept Phys, Regrp Quebecois Mat Pointe, Sherbrooke, PQ J1K 2R1, Canada

[2] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[3] Moscow Power Engn Inst, Moscow 105835, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 374卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Manganites; Single crystals; Magnetocaloric effect; Multiferroics;

D O I：

10.1016/j.jmmm.2014.08.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties and magnetocaloric performance of the multiferroic hexagonal single crystal DyMnO3 have been explored. A giant anisotropic and reversible magnetocaloric effect (MCE) is observed in the vicinity of the magnetic phase transition from the ferrimagnetic to the antiferromagnetic state at 8 K. This latter was found to be of first order character. The magnetocaloric effect was enhanced when a magnetic field higher than 1 T is applied along the hard plane, ab. Moreover, a significant level of the entropy change is observed at very low magnetic fields along the easy axis c, resulting from a field induced metamagnetic transition around 8 K. Our estimate of the cooling capacity of the hexagonal DyMnO3 is comparable or even larger than the best magnetocaloric materials in a similar working temperature range. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：252 / 257

页数：6

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