Magnetocaloric effect and critical behavior in melt-extracted Gd60Co15Al25 microwires

Dawei Xing; Hongxian Shen; Sida Jiang; Jingshun Liu; Manh Huong Phan; Huan Wang; Faxiang Qin; Dongming Chen; Yanfen Liu; Jianfei Sun

doi:10.1002/pssa.201532192

Magnetocaloric effect and critical behavior in melt-extracted Gd₆₀Co₁₅Al₂₅ microwires

Dawei Xing
, Hongxian Shen
, Sida Jiang
, Jingshun Liu
, Manh Huong Phan
, Huan Wang
, Faxiang Qin
, Dongming Chen
, Yanfen Liu
, Jianfei Sun^*

^*Corresponding author for this work

Harbin Institute of Technology
University of South Florida
Inner Mongolia University of Technology
Zhejiang University

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

20 Scopus citations

Abstract

High-quality Gd₆₀Co₁₅Al₂₅ microwires with an average diameter of 40 μm were successfully fabricated by the melt-extraction method. The as-cast microwires undergo a second-order paramagnetic to ferromagnetic (PM-FM) transition at μ100 K. Large values of the magnetic entropy change (-ΔS_M μ9.73 J kg^-1 K^-1) and the refrigerant capacity (RC μ732 J kg^-1) are achieved for a field change of 5 T. A careful analysis of critical exponents near the PM-FM transition indicates the significant effects of structural disorder on the long-range ferromagnetic interaction and the magnetocaloric response of the microwires. The excellent magnetocaloric properties make the Gd₆₀Co₁₅Al₂₅ microwires very promising for use in magnetic refrigerators operating in the liquid nitrogen temperature range.

Original language	English
Pages (from-to)	1905-1910
Number of pages	6
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	212
Issue number	9
DOIs	https://doi.org/10.1002/pssa.201532192
State	Published - 1 Sep 2015
Externally published	Yes

Keywords

ferromagnetic materials
magnetic refrigeration
magnetocaloric effects
microwires
soft magnetic materials

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10.1002/pssa.201532192

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title = "Magnetocaloric effect and critical behavior in melt-extracted Gd60Co15Al25 microwires",

abstract = "High-quality Gd60Co15Al25 microwires with an average diameter of 40 μm were successfully fabricated by the melt-extraction method. The as-cast microwires undergo a second-order paramagnetic to ferromagnetic (PM-FM) transition at μ100 K. Large values of the magnetic entropy change (-ΔSM μ9.73 J kg-1 K-1) and the refrigerant capacity (RC μ732 J kg-1) are achieved for a field change of 5 T. A careful analysis of critical exponents near the PM-FM transition indicates the significant effects of structural disorder on the long-range ferromagnetic interaction and the magnetocaloric response of the microwires. The excellent magnetocaloric properties make the Gd60Co15Al25 microwires very promising for use in magnetic refrigerators operating in the liquid nitrogen temperature range.",

keywords = "ferromagnetic materials, magnetic refrigeration, magnetocaloric effects, microwires, soft magnetic materials",

author = "Dawei Xing and Hongxian Shen and Sida Jiang and Jingshun Liu and Phan, \{Manh Huong\} and Huan Wang and Faxiang Qin and Dongming Chen and Yanfen Liu and Jianfei Sun",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2015",

month = sep,

day = "1",

doi = "10.1002/pssa.201532192",

language = "英语",

volume = "212",

pages = "1905--1910",

journal = "Physica Status Solidi (A) Applications and Materials Science",

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TY - JOUR

T1 - Magnetocaloric effect and critical behavior in melt-extracted Gd60Co15Al25 microwires

AU - Xing, Dawei

AU - Shen, Hongxian

AU - Jiang, Sida

AU - Liu, Jingshun

AU - Phan, Manh Huong

AU - Wang, Huan

AU - Qin, Faxiang

AU - Chen, Dongming

AU - Liu, Yanfen

AU - Sun, Jianfei

PY - 2015/9/1

Y1 - 2015/9/1

N2 - High-quality Gd60Co15Al25 microwires with an average diameter of 40 μm were successfully fabricated by the melt-extraction method. The as-cast microwires undergo a second-order paramagnetic to ferromagnetic (PM-FM) transition at μ100 K. Large values of the magnetic entropy change (-ΔSM μ9.73 J kg-1 K-1) and the refrigerant capacity (RC μ732 J kg-1) are achieved for a field change of 5 T. A careful analysis of critical exponents near the PM-FM transition indicates the significant effects of structural disorder on the long-range ferromagnetic interaction and the magnetocaloric response of the microwires. The excellent magnetocaloric properties make the Gd60Co15Al25 microwires very promising for use in magnetic refrigerators operating in the liquid nitrogen temperature range.

AB - High-quality Gd60Co15Al25 microwires with an average diameter of 40 μm were successfully fabricated by the melt-extraction method. The as-cast microwires undergo a second-order paramagnetic to ferromagnetic (PM-FM) transition at μ100 K. Large values of the magnetic entropy change (-ΔSM μ9.73 J kg-1 K-1) and the refrigerant capacity (RC μ732 J kg-1) are achieved for a field change of 5 T. A careful analysis of critical exponents near the PM-FM transition indicates the significant effects of structural disorder on the long-range ferromagnetic interaction and the magnetocaloric response of the microwires. The excellent magnetocaloric properties make the Gd60Co15Al25 microwires very promising for use in magnetic refrigerators operating in the liquid nitrogen temperature range.

KW - ferromagnetic materials

KW - magnetic refrigeration

KW - magnetocaloric effects

KW - microwires

KW - soft magnetic materials

UR - https://www.scopus.com/pages/publications/84941742890

U2 - 10.1002/pssa.201532192

DO - 10.1002/pssa.201532192

M3 - 文章

AN - SCOPUS:84941742890

SN - 1862-6300

VL - 212

SP - 1905

EP - 1910

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 9

ER -

Magnetocaloric effect and critical behavior in melt-extracted Gd₆₀Co₁₅Al₂₅ microwires

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Keywords

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