Magnetic ordering of Mn2GeS4 single crystals with olivine structure

被引：2
|
作者：
Solzi, M. [1 ,2 ]
Pernechele, C. [1 ]
Attolini, G. [2 ]
Delgado, G. E. [3 ]
Sagredo, V. [4 ]
机构：
[1] Univ Parma, Dept Math Phys & Comp Sci, Parco Area Sci 7-A, I-43124 Parma, Italy
[2] IMEM CNR Inst, Parco Area Sci 37-A, I-43124 Parma, Italy
[3] Univ Los Andes, Lab Cristalog, Dept Quim, Fac Ciencias, Merida, Venezuela
[4] Univ Los Andes, Lab Magnetismo, Dept Fis, Fac Ciencias, Merida, Venezuela
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 498卷 / 498期
关键词：
Transition metal alloys and compounds; Crystal growth; Magnetization; Phase transitions; Magnetic measurements; NEUTRON-DIFFRACTION; REFINEMENT; FE2GES4; NUCLEAR;
D O I：
10.1016/j.jmmm.2019.166164
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single crystals of Mn2GeS4 were grown by chemical vapor transport. X-ray powder diffraction data show a single phase. Rietveld refinement results indicated that Mn2GeS4 crystalize in an olivine-type structure. The magnetic properties of the compound have been studied by means of DC magnetometry and AC susceptibility measurements. The system shows two different phase transitions on decreasing temperature, a first one at about 90 K, leading the system from the paramagnetic to an antiferromagnetic state and a second at about 25 K, corresponding to the onset of a weak ferromagnetic behavior superimposed to the underlying antiferromagnetic order. No evidence of a possible spin-glass behavior in the intermediate temperature region has been found.
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页数：7
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