From tricritical ferromagnetism to metamagnetism in quasi-two dimensional Tl(Co1-xNix)2S2 (X=0, 0.05)

被引：2

作者：

Mao, Qianhui ^{[1
,2
]}

Yang, Jinhu ^{[3
]}

Wang, Hangdong ^{[2
,3
]}

Chen, Bin ^{[3
]}

Geng, Xiaodong ^{[1
]}

Pan, Mengyang ^{[1
]}

Fang, Minghu ^{[2
]}

机构：

[1] Henan Inst Engn, Coll Sci, Xinzheng 451191, Peoples R China

[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2018年 / 30卷 / 29期

基金：

中国国家自然科学基金;

关键词：

tricritical phenomenon; metamagnetism; layered structure; PHASE; TEMPERATURE; BEHAVIOR; NICKEL; STATE;

D O I：

10.1088/1361-648X/aacbb4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the critical behavior near the ferromagnetic transition of TlCo2S2 single crystals and the magnetic properties of Tl(Co0.95Ni0.05)(2)S-2 by means of magnetization measurements. The obtained critical exponents beta, gamma and delta of TlCo2S2 could basically satisfy the scaling equations and are found very close to the prediction of the tricritical mean-field theory. 5% Ni doping drives the system to an antiferromagnetic ground state which is unstable to magnetic field, yielding metamagnetic transition. The possible existence of a tricritical point (TCP) in Tl(Co0.95Ni0.05)(2)S-2 is also discussed.

引用

页数：5