Magnetocaloric effect in uncoated Gd55Al20Co25 amorphous wires

Dawei Xing; Hongxian Shen; Jingshun Liu; Huan Wang; Fuyang Cao; Faxing Qin; Dongming Chen; Yanfen Liu; Jianfei Sun

doi:10.1590/1516-1439.325414

Magnetocaloric effect in uncoated Gd₅₅Al₂₀Co₂₅ amorphous wires

Dawei Xing
, Hongxian Shen
, Jingshun Liu
, Huan Wang
, Fuyang Cao
, Faxing Qin
, Dongming Chen
, Yanfen Liu
, Jianfei Sun

Harbin Institute of Technology
Inner Mongolia University of Technology
Zhejiang University

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

16 Scopus citations

Abstract

The Gd₅₅Al₂₀Co₂₅ amorphous wires exhibit a relatively strong magnetocaloric effect (MCE). These melt-extracted amorphous wires display second-order magnetic transition (SOMT) and the value of maximal magnetic entropy (-ΔS_m) for the melt-extracted wires is calculated to be ∼9.7 J•kg^-1•K^-1 around the Curie point (T_C) of ∼110 K with applied field of 5 T. Moreover, the melt-extracted amorphous wires show a high refrigerating efficiency with a relatively large cooling power (RCP, ∼804 J•kg^-1) and refrigeration capacity (RC, ∼580 J•kg^-1) under an applied magnetic field of 5T due to the broad cparamagnetic-ferromagnetic (PM-FM) region associated with amorphous alloys. These favorable properties make melt-extracted Gd-based amorphous wires to be the potential refrigerant for magnetic refrigeration (MR) of liquid oxygen.

Original language	English
Pages (from-to)	49-54
Number of pages	6
Journal	Materials Research
Volume	18
DOIs	https://doi.org/10.1590/1516-1439.325414
State	Published - Nov 2015
Externally published	Yes

Keywords

Amorphous microwires
Magnetic entropy change
Melt-extraction
Refrigerating efficiency

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10.1590/1516-1439.325414

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@article{48897620f100493d8e77ddeafb48cebc,

title = "Magnetocaloric effect in uncoated Gd55Al20Co25 amorphous wires",

abstract = "The Gd55Al20Co25 amorphous wires exhibit a relatively strong magnetocaloric effect (MCE). These melt-extracted amorphous wires display second-order magnetic transition (SOMT) and the value of maximal magnetic entropy (-ΔSm) for the melt-extracted wires is calculated to be ∼9.7 J•kg-1•K-1 around the Curie point (TC) of ∼110 K with applied field of 5 T. Moreover, the melt-extracted amorphous wires show a high refrigerating efficiency with a relatively large cooling power (RCP, ∼804 J•kg-1) and refrigeration capacity (RC, ∼580 J•kg-1) under an applied magnetic field of 5T due to the broad cparamagnetic-ferromagnetic (PM-FM) region associated with amorphous alloys. These favorable properties make melt-extracted Gd-based amorphous wires to be the potential refrigerant for magnetic refrigeration (MR) of liquid oxygen.",

keywords = "Amorphous microwires, Magnetic entropy change, Melt-extraction, Refrigerating efficiency",

author = "Dawei Xing and Hongxian Shen and Jingshun Liu and Huan Wang and Fuyang Cao and Faxing Qin and Dongming Chen and Yanfen Liu and Jianfei Sun",

year = "2015",

month = nov,

doi = "10.1590/1516-1439.325414",

language = "英语",

volume = "18",

pages = "49--54",

journal = "Materials Research",

issn = "1516-1439",

publisher = "Universidade Federal de Sao Carlos",

}

TY - JOUR

T1 - Magnetocaloric effect in uncoated Gd55Al20Co25 amorphous wires

AU - Xing, Dawei

AU - Shen, Hongxian

AU - Liu, Jingshun

AU - Wang, Huan

AU - Cao, Fuyang

AU - Qin, Faxing

AU - Chen, Dongming

AU - Liu, Yanfen

AU - Sun, Jianfei

PY - 2015/11

Y1 - 2015/11

N2 - The Gd55Al20Co25 amorphous wires exhibit a relatively strong magnetocaloric effect (MCE). These melt-extracted amorphous wires display second-order magnetic transition (SOMT) and the value of maximal magnetic entropy (-ΔSm) for the melt-extracted wires is calculated to be ∼9.7 J•kg-1•K-1 around the Curie point (TC) of ∼110 K with applied field of 5 T. Moreover, the melt-extracted amorphous wires show a high refrigerating efficiency with a relatively large cooling power (RCP, ∼804 J•kg-1) and refrigeration capacity (RC, ∼580 J•kg-1) under an applied magnetic field of 5T due to the broad cparamagnetic-ferromagnetic (PM-FM) region associated with amorphous alloys. These favorable properties make melt-extracted Gd-based amorphous wires to be the potential refrigerant for magnetic refrigeration (MR) of liquid oxygen.

AB - The Gd55Al20Co25 amorphous wires exhibit a relatively strong magnetocaloric effect (MCE). These melt-extracted amorphous wires display second-order magnetic transition (SOMT) and the value of maximal magnetic entropy (-ΔSm) for the melt-extracted wires is calculated to be ∼9.7 J•kg-1•K-1 around the Curie point (TC) of ∼110 K with applied field of 5 T. Moreover, the melt-extracted amorphous wires show a high refrigerating efficiency with a relatively large cooling power (RCP, ∼804 J•kg-1) and refrigeration capacity (RC, ∼580 J•kg-1) under an applied magnetic field of 5T due to the broad cparamagnetic-ferromagnetic (PM-FM) region associated with amorphous alloys. These favorable properties make melt-extracted Gd-based amorphous wires to be the potential refrigerant for magnetic refrigeration (MR) of liquid oxygen.

KW - Amorphous microwires

KW - Magnetic entropy change

KW - Melt-extraction

KW - Refrigerating efficiency

UR - https://www.scopus.com/pages/publications/84949988699

U2 - 10.1590/1516-1439.325414

DO - 10.1590/1516-1439.325414

M3 - 文章

AN - SCOPUS:84949988699

SN - 1516-1439

VL - 18

SP - 49

EP - 54

JO - Materials Research

JF - Materials Research

ER -

Magnetocaloric effect in uncoated Gd₅₅Al₂₀Co₂₅ amorphous wires

Abstract

Keywords

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