Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co1-xCuxCr2S4

Crystallographic structure, magnetic properties, and magnetic entropy change of the Cr-based spinel sulfides Co1-xCuxCr2S4 （x =0-0.8） have been investigated. All these compounds crystallize into the cubic spinel structure, the Cu substitution shrinks linearly the lattice constant at a ratio of 0.022...

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Veröffentlicht in:	中国物理B：英文版 2017-03, Vol.26 (3), p.522-526
1. Verfasser:	郑小超李西阳何伦华张绍英唐明华王芳卫
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creator	郑小超李西阳何伦华张绍英唐明华王芳卫
description	Crystallographic structure, magnetic properties, and magnetic entropy change of the Cr-based spinel sulfides Co1-xCuxCr2S4 （x =0-0.8） have been investigated. All these compounds crystallize into the cubic spinel structure, the Cu substitution shrinks linearly the lattice constant at a ratio of 0.0223 A per Cu atom in the unit cell, and enhances linearly the Curie temperature and the spontaneous magnetization at the rates of 18 K and 0.33 μB/f.u, per Cu atom in the unit cell, respectively. All these compounds show a typical behavior of second order magnetic transition, and a room temperature magnetic entropy change of 2.57 J/kg.K is achieved for Co0.4Cu0.6Cr2S4.
doi_str_mv	10.1088/1674-1056/26/3/037502
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All these compounds crystallize into the cubic spinel structure, the Cu substitution shrinks linearly the lattice constant at a ratio of 0.0223 A per Cu atom in the unit cell, and enhances linearly the Curie temperature and the spontaneous magnetization at the rates of 18 K and 0.33 μB/f.u, per Cu atom in the unit cell, respectively. 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All these compounds crystallize into the cubic spinel structure, the Cu substitution shrinks linearly the lattice constant at a ratio of 0.0223 A per Cu atom in the unit cell, and enhances linearly the Curie temperature and the spontaneous magnetization at the rates of 18 K and 0.33 μB/f.u, per Cu atom in the unit cell, respectively. All these compounds show a typical behavior of second order magnetic transition, and a room temperature magnetic entropy change of 2.57 J/kg.K is achieved for Co0.4Cu0.6Cr2S4.</abstract><doi>10.1088/1674-1056/26/3/037502</doi><tpages>5</tpages></addata></record>
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title	Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co1-xCuxCr2S4
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