Carbon-doping effects on the metamagnetic transition and magnetocaloric effect in MnAsCx

W. B. Cui; W. Liu; Q. Zhang; B. Li; X. H. Liu; F. Yang; X. G. Zhao; Z. D. Zhang

doi:10.1016/j.jmmm.2010.02.014

Carbon-doping effects on the metamagnetic transition and magnetocaloric effect in MnAsC_x

W. B. Cui, W. Liu, Q. Zhang, B. Li, X. H. Liu, F. Yang, X. G. Zhao, Z. D. Zhang

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

14 Scopus citations

Abstract

Carbon doping effects in MnAs alloys have been investigated. More carbon doping in MnAs alloys leads to lower Curie temperature, larger thermal hysteresis and sharper slope of the dependence of critical field on reduced temperature due to severe lattice distortion. The obtained maximum of magnetic entropy change for a field change of 5 T is about 12.8 J kg^-1 K^-1 near room temperature, and increases with more doping carbon content to about 22.4 J kg^-1 K^-1 in MnAsC_0.03 and 13.2 J kg^-1K^-1 in MnAsC_0.05.

Original language	English
Pages (from-to)	2223-2226
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	15
DOIs	https://doi.org/10.1016/j.jmmm.2010.02.014
State	Published - Aug 2010
Externally published	Yes

Funding

This work has been supported by the National Nature Science Foundation of China under Projects 50831006 and 50971123 and National Basic Research Program (No. 2010CB934603 ) of China, the Ministry of Science and Technology of China .

Funders	Funder number
Ministry of Science and Technology of China
National Nature Science Foundation of China	50971123, 50831006
National Basic Research Program of China (973 Program)	2010CB934603

Keywords

Carbon-doping effect
Magneto-caloric effect
Metamagnetic phase transition

Access to Document

10.1016/j.jmmm.2010.02.014

Cite this

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title = "Carbon-doping effects on the metamagnetic transition and magnetocaloric effect in MnAsCx",

abstract = "Carbon doping effects in MnAs alloys have been investigated. More carbon doping in MnAs alloys leads to lower Curie temperature, larger thermal hysteresis and sharper slope of the dependence of critical field on reduced temperature due to severe lattice distortion. The obtained maximum of magnetic entropy change for a field change of 5 T is about 12.8 J kg-1 K-1 near room temperature, and increases with more doping carbon content to about 22.4 J kg-1 K-1 in MnAsC0.03 and 13.2 J kg-1K-1 in MnAsC0.05.",

keywords = "Carbon-doping effect, Magneto-caloric effect, Metamagnetic phase transition",

author = "Cui, {W. B.} and W. Liu and Q. Zhang and B. Li and Liu, {X. H.} and F. Yang and Zhao, {X. G.} and Zhang, {Z. D.}",

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AU - Cui, W. B.

AU - Liu, W.

AU - Zhang, Q.

AU - Li, B.

AU - Liu, X. H.

AU - Yang, F.

AU - Zhao, X. G.

AU - Zhang, Z. D.

PY - 2010/8

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N2 - Carbon doping effects in MnAs alloys have been investigated. More carbon doping in MnAs alloys leads to lower Curie temperature, larger thermal hysteresis and sharper slope of the dependence of critical field on reduced temperature due to severe lattice distortion. The obtained maximum of magnetic entropy change for a field change of 5 T is about 12.8 J kg-1 K-1 near room temperature, and increases with more doping carbon content to about 22.4 J kg-1 K-1 in MnAsC0.03 and 13.2 J kg-1K-1 in MnAsC0.05.

AB - Carbon doping effects in MnAs alloys have been investigated. More carbon doping in MnAs alloys leads to lower Curie temperature, larger thermal hysteresis and sharper slope of the dependence of critical field on reduced temperature due to severe lattice distortion. The obtained maximum of magnetic entropy change for a field change of 5 T is about 12.8 J kg-1 K-1 near room temperature, and increases with more doping carbon content to about 22.4 J kg-1 K-1 in MnAsC0.03 and 13.2 J kg-1K-1 in MnAsC0.05.

KW - Carbon-doping effect

KW - Magneto-caloric effect

KW - Metamagnetic phase transition

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