Magnetic ordering of Mn2GeS4 single crystals with olivine structure

被引：3

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

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.

引用

页数：7

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