Critical behavior in the layered organic-inorganic hybrid (CH3NH3)2CuCl4

doi:10.1088/1674-1056/ab892c

中国物理B ›› 2020, Vol. 29 ›› Issue (6): 67503-067503.doi: 10.1088/1674-1056/ab892c

所属专题： Virtual Special Topic — Magnetism and Magnetic Materials

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄

Tina Raoufi, Yinina Ma(马怡妮娜), Young Sun(孙阳)

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2020-03-13 修回日期:2020-04-09 出版日期:2020-06-05 发布日期:2020-06-05
通讯作者: Young Sun E-mail:youngsun@iphy.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and the Beijing Natural Science Foundation, China (Grant No. Z180009).

Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄

Tina Raoufi^1,2, Yinina Ma(马怡妮娜)^1,2, Young Sun(孙阳)^1,2

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China

Received:2020-03-13 Revised:2020-04-09 Online:2020-06-05 Published:2020-06-05
Contact: Young Sun E-mail:youngsun@iphy.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and the Beijing Natural Science Foundation, China (Grant No. Z180009).

摘要/Abstract

摘要： The critical properties and the nature of the ferromagnetic-paramagnetic phase transition in the 2D organic-inorganic hybrid (CH₃NH₃)₂CuCl₄ single crystal have been investigated by dc magnetization in the vicinity of the magnetic transition. Different techniques were used to estimate the critical exponents near the ferromagnetic-paramagnetic phase transition such as modified Arrott plots, the Kouvel-Fisher method, and the scaling hypothesis. Values of β=0.22, γ=0.82, and δ=4.4 were obtained. These critical exponents are in line with their corresponding values confirmed through the scaling hypothesis as well as the Widom scaling relation, supporting their reliability. It is concluded that this 2D hybrid compound possesses strong ferromagnetic intra-layer exchange interaction as well as weak interlayer ferromagnetic coupling that causes a crossover from 2D to 3D long-range interaction.

关键词: critical behavior, critical exponent, organic-inorganic hybrid

Abstract: The critical properties and the nature of the ferromagnetic-paramagnetic phase transition in the 2D organic-inorganic hybrid (CH₃NH₃)₂CuCl₄ single crystal have been investigated by dc magnetization in the vicinity of the magnetic transition. Different techniques were used to estimate the critical exponents near the ferromagnetic-paramagnetic phase transition such as modified Arrott plots, the Kouvel-Fisher method, and the scaling hypothesis. Values of β=0.22, γ=0.82, and δ=4.4 were obtained. These critical exponents are in line with their corresponding values confirmed through the scaling hypothesis as well as the Widom scaling relation, supporting their reliability. It is concluded that this 2D hybrid compound possesses strong ferromagnetic intra-layer exchange interaction as well as weak interlayer ferromagnetic coupling that causes a crossover from 2D to 3D long-range interaction.

Key words: critical behavior, critical exponent, organic-inorganic hybrid

中图分类号: (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))

75.40.Cx

75.50.-y (Studies of specific magnetic materials)

Tina Raoufi, 马怡妮娜, 孙阳. Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄[J]. 中国物理B, 2020, 29(6): 67503-067503.

Tina Raoufi, Yinina Ma(马怡妮娜), Young Sun(孙阳). Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄[J]. Chin. Phys. B, 2020, 29(6): 67503-067503.

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Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄

Critical behavior in the layered organic-inorganic hybrid (CH₃NH₃)₂CuCl₄

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