Magnetic Properties of Layered Itinerant Electron Ferromagnet Fe3GeTe2

被引：270

作者：

Chen, Bin ^{[1
,2
]}

Yang, JinHu ^{[1
]}

Wang, HangDong ^{[1
]}

Imai, Masaki ^{[2
]}

Ohta, Hiroto ^{[2
]}

Michioka, Chishiro ^{[2
]}

Yoshimura, Kazuyoshi ^{[2
]}

Fang, MingHu ^{[3
]}

机构：

[1] Hangzhou Normal Univ, Dept Phys, Hangzhou 310036, Zhejiang, Peoples R China

[2] Kyoto Univ, Dept Chem, Grad Sch Sci, Kyoto 6068502, Japan

[3] Zhejiang Univ, Dept Phys, Hangzhou 310018, Peoples R China

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2013年 / 82卷 / 12期

基金：

日本学术振兴会;

关键词：

Fe3GeTe2; itinerant ferromagnet; SCR; Arrott plot; SPIN-FLUCTUATION THEORY; WEAK FERROMAGNETISM; HIGH-PRESSURE; SYSTEM; SUSCEPTIBILITY;

D O I：

10.7566/JPSJ.82.124711

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have successfully synthesized a single-crystal sample of the layered structure ferromagnet Fe3GeTe2 and present the results of its complete characterization using powder X-ray diffraction (XRD), magnetic susceptibility chi(T), isotherm magnetization M(H), specific heat C(T), and electrical resistivity rho(T) measurements. The rietveld refinement of the powder XRD data confirms that Fe3GeTe2 crystallizes in the space group p6(3)/mmc. The chi(T), C(T), and rho(T) data indicate bulk ferromagnetic ordering at T-C = 220 K with a saturation moment of 1.625 mu(B)/Fe at zero temperature. The magnetic measurements of the external magnetic field H applied along the c-axis and ab-plane show a large anisotropy in this material. We found that the modified Arrott plot (M-4-H/M) rather than the M-2-H/M plot is obeyed in this material. The generalized Rhodes-Wohlfarth ratio indicates an itinerant magnetism in this material. The spin fluctuation parameters are estimated and the magnetic properties are discussed in the framework of the self-consistent renormalization (SCR) and Takahashi theory of spin fluctuations.

引用

页数：7

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