Field induced metamagnetism and large magnetic entropy change in RRhSi (R = Tb, Dy, Ho) rare earth intermetallics

被引：4

作者：

Gupta, S. ^{[1
,2
]}

Lukoyanov, A. V. ^{[3
,4
,5
]}

Knyazev, Yu. V. ^{[3
]}

Kuz'min, Yu. I. ^{[3
]}

Suresh, K. G. ^{[2
]}

机构：

[1] Univ Leeds, Leeds LS2 9JT, W Yorkshire, England

[2] Indian Inst Technol, Dept Phys, Mumbai 400076, Maharashtra, India

[3] Russian Acad Sci, MN Miheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia

[4] Ural Fed Univ, Ekaterinburg 620002, Russia

[5] Skolkovo Inst Sci & Technol, Moscow 121205, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 888卷

基金：

俄罗斯科学基金会;

关键词：

Rare-earth intermetallics; Large magnetocaloric effect; Magnetic properties; Electronic structure; Optical properties; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; PHASE-TRANSITIONS; CRYSTAL-STRUCTURE; TBRHSI; ER;

D O I：

10.1016/j.jallcom.2021.161493

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：

We report magnetic, magneto-caloric, electronic structure, and optical properties of rare earth intermetallics RRhSi (R=Tb, Dy, Ho). These compounds show antiferromagnetic ordering at low temperatures. The magnetization data reveal field-induced metamagnetic transition in DyRhSi and HoRhSi compounds, which results in large magnetocaloric effect (MCE) in these compounds. In the case of Dy, the MCE is found to be larger than those of other analogs of the RTX family. Theoretical calculations confirm anti ferromagnetic ordering in these compounds and show a negligible contribution of magnetic moment from Rh atom. The optical measurements carried out for these materials support the theoretical calculations. We uncover large magnetocaloric effect in DyRhSi and HoRhSi intermetallics attributed to metamagnetic transition and identify electronic states involved in the formation of magnetic and spectral properties based on DFT+U and optical studies. (c) 2021 Elsevier B.V. All rights reserved.

引用

页数：6

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