Magnetic structures of the Eu and Cr moments in EuCr2As2: Neutron diffraction study

被引：11
|
作者：
Nandi, S. [1 ]
Xiao, Y. [2 ,3 ]
Qureshi, N. [4 ]
Paramanik, U. B. [1 ]
Jin, W. T. [2 ,3 ,5 ]
Su, Y. [5 ]
Ouladdiaf, B. [4 ]
Hossain, Z. [1 ]
Brueckel, Th. [2 ,3 ,5 ]
机构：
[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India
[2] Forschungszentrum Julich GmbH, JCNS, D-52425 Julich, Germany
[3] Forschungszentrum Julich GmbH, PGI, JARA FIT, D-52425 Julich, Germany
[4] Inst Laue Langevin, 71 Rue Martyrs,BP156, F-38042 Grenoble 9, France
[5] Forschungszentrum Julich GmbH, Outstn MLZ, JCNS, Lichtenbergstr 1, D-85747 Garching, Germany
来源：
PHYSICAL REVIEW B | 2016年 / 94卷 / 09期
关键词：
IRON-PNICTIDES; 43; K; SUPERCONDUCTIVITY; COMPOUND;
D O I：
10.1103/PhysRevB.94.094411
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic structures of the Eu2+ and Cr2+ moments in the nonsuperconducting parent compound EuCr2As2 have been determined by using neutron diffraction. While the Eu2+ moments order ferromagnetically with moments along the c direction at T-C = 21.0(1) K, the ordering temperature of the Cr2+ moments is found to be at very high temperature of 680(40) K by using magnetization measurements. The Cr2+ moments order in a G-type antiferromagnetic structure with moments along the c direction. According to this magnetic structure, the nearest-neighbor Cr2+ moments are antiferromagnetically aligned in the a-b plane as well as in the c direction. The ordered magnetic moment of the Eu2+ and Cr2+ amounts to 6.2(5)mu(B) and 1.7(4)mu(B), respectively, at T = 2K.
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页数：7
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