Magnetic properties and magnetocaloric effect in Dy1-xScxNi2 solid solutions

被引：13

作者：

Cwik, J. ^{[1
,2
]}

Palewski, T. ^{[1
]}

Nenkov, K. ^{[1
,2
]}

Lyubina, J. ^{[2
]}

Gutfleisch, O. ^{[2
]}

Klamut, J. ^{[1
,3
]}

机构：

[1] Int Lab High Magnet Fields & Low Temp, PL-53421 Wroclaw, Poland

[2] IFW Dresden, Inst Metall Mat, D-01171 Dresden, Germany

[3] PAS, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 506卷 / 02期

关键词：

Rare earth alloys and compounds; Magnetically ordered materials; Heat capacity; Magentisation; Magnetocaloric; PHYSICAL-PROPERTIES; HEAT; SUBSTITUTION; HO;

D O I：

10.1016/j.jallcom.2010.06.192

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：

X-ray diffraction, magnetization, magnetic susceptibility, and heat capacity data are reported for the solid solutions Dy1-xScxNi2 (0 <= x >= 1). All the Dy1-xScxNi2 solid solutions are single phase with the C15 cubic Laves phase superstructure. The alloys with x <= 0.8 are ferromagnets with a low (below 22 K) Curie temperature that decreases from 21.1 K for DyNi2 to 4.5 K for Dy0.2Sc0.8Ni2. Dy0.1Sc0.9Ni2 and ScNi2 have no long-range magnetic order down to 2K. At high temperatures, all the Dy1-xScxNi2 solid solutions, except ScNi2, are Curie-Weiss paramagnets. The Debye temperature, phonon and conduction electron contributions as well as a magnetic contribution to the heat capacity have been determined from heat capacity measurements. The magnetocaloric effect for selected solid solutions was determined in magnetic fields up to 3 T. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：626 / 630

页数：5

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