Critical behaviour of the RCo3B2 (R = Gd, Tb and Dy) compounds

Lingwei Li; Katsuhiko Nishimura; Dexuan Huo; Zhenghong Qian; Takahiro Namiki

doi:10.1016/j.jallcom.2013.03.270

Critical behaviour of the RCo₃B₂ (R = Gd, Tb and Dy) compounds

Lingwei Li^*, Katsuhiko Nishimura, Dexuan Huo, Zhenghong Qian, Takahiro Namiki

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The critical properties of RCo₃B₂ (R = Gd, Tb, and Dy) compounds around the rare earth sublattice magnetic phase transition have been investigated by using the field dependence of magnetic entropy change method. The obtained values of critical exponents for all the compounds satisfied with the scaling theory. The critical behaviour of RCo ₃B₂ compounds lies between mean-field model and 3D Heisenberg model, close to Tricritical mean-field model, and close to 3D Ising model for R = Gd, Tb, and Dy, respectively. The present results have confirmed that the field dependence of magnetic entropy change method can be applied to study the critical behaviour of magnetic materials.

Original language	English
Pages (from-to)	205-208
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	572
DOIs	https://doi.org/10.1016/j.jallcom.2013.03.270
State	Published - 2013/09/25

Keywords

Critical behaviour
Field dependence of magnetic entropy change method
Magnetic phase transition
Magnetocaloric effect
RCoB compounds

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2013.03.270

Cite this

@article{800946bf9d484061b257badcf63f4416,

title = "Critical behaviour of the RCo3B2 (R = Gd, Tb and Dy) compounds",

abstract = "The critical properties of RCo3B2 (R = Gd, Tb, and Dy) compounds around the rare earth sublattice magnetic phase transition have been investigated by using the field dependence of magnetic entropy change method. The obtained values of critical exponents for all the compounds satisfied with the scaling theory. The critical behaviour of RCo 3B2 compounds lies between mean-field model and 3D Heisenberg model, close to Tricritical mean-field model, and close to 3D Ising model for R = Gd, Tb, and Dy, respectively. The present results have confirmed that the field dependence of magnetic entropy change method can be applied to study the critical behaviour of magnetic materials.",

keywords = "Critical behaviour, Field dependence of magnetic entropy change method, Magnetic phase transition, Magnetocaloric effect, RCoB compounds",

author = "Lingwei Li and Katsuhiko Nishimura and Dexuan Huo and Zhenghong Qian and Takahiro Namiki",

note = "Funding Information: This work was sponsored by the National Natural Science Foundation of China (No. 11004044), Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of China (No. 2012-940), and Zhejiang Provincial Natural Science Foundation of China (No. Y4110581).",

year = "2013",

month = sep,

day = "25",

doi = "10.1016/j.jallcom.2013.03.270",

language = "英語",

volume = "572",

pages = "205--208",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Critical behaviour of the RCo3B2 (R = Gd, Tb and Dy) compounds

AU - Li, Lingwei

AU - Nishimura, Katsuhiko

AU - Huo, Dexuan

AU - Qian, Zhenghong

AU - Namiki, Takahiro

N1 - Funding Information: This work was sponsored by the National Natural Science Foundation of China (No. 11004044), Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of China (No. 2012-940), and Zhejiang Provincial Natural Science Foundation of China (No. Y4110581).

PY - 2013/9/25

Y1 - 2013/9/25

N2 - The critical properties of RCo3B2 (R = Gd, Tb, and Dy) compounds around the rare earth sublattice magnetic phase transition have been investigated by using the field dependence of magnetic entropy change method. The obtained values of critical exponents for all the compounds satisfied with the scaling theory. The critical behaviour of RCo 3B2 compounds lies between mean-field model and 3D Heisenberg model, close to Tricritical mean-field model, and close to 3D Ising model for R = Gd, Tb, and Dy, respectively. The present results have confirmed that the field dependence of magnetic entropy change method can be applied to study the critical behaviour of magnetic materials.

AB - The critical properties of RCo3B2 (R = Gd, Tb, and Dy) compounds around the rare earth sublattice magnetic phase transition have been investigated by using the field dependence of magnetic entropy change method. The obtained values of critical exponents for all the compounds satisfied with the scaling theory. The critical behaviour of RCo 3B2 compounds lies between mean-field model and 3D Heisenberg model, close to Tricritical mean-field model, and close to 3D Ising model for R = Gd, Tb, and Dy, respectively. The present results have confirmed that the field dependence of magnetic entropy change method can be applied to study the critical behaviour of magnetic materials.

KW - Critical behaviour

KW - Field dependence of magnetic entropy change method

KW - Magnetic phase transition

KW - Magnetocaloric effect

KW - RCoB compounds

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U2 - 10.1016/j.jallcom.2013.03.270

DO - 10.1016/j.jallcom.2013.03.270

M3 - 学術論文

AN - SCOPUS:84877031409

SN - 0925-8388

VL - 572

SP - 205

EP - 208

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -