Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires

Yanfen Liu; Xuexi Zhang; Dawei Xing; Hongxian Shen; Dongming Chen; Jingshun Liu; Jianfei Sun

doi:10.1016/j.jallcom.2014.07.077

Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires

Yanfen Liu
, Xuexi Zhang
, Dawei Xing
, Hongxian Shen
, Dongming Chen
, Jingshun Liu
, Jianfei Sun^*

^*Corresponding author for this work

Harbin Institute of Technology

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

40 Scopus citations

Abstract

We reported the magnetocaloric properties of Heusler-type Ni ₄₈Mn₂₆Ga_19.5Fe_6.5 microwires with diameter of ∼50 μm which were fabricated by a precise melt-extraction method. The Fe-doped Ni-Mn-Ga microwires after chemical ordering heat-treatment exhibit negligible thermal and magnetic hysteresis along the axial direction due to their small magnetocrystalline anisotropy and display excellent magnetocaloric effect (MCE) for both magnetic (paramagnetic-ferromagnetic) phase transition and structural (austenite-martensite) phase transition. The maximum entropy change (-ΔS_m), ∼4.7 J kg^-1 K ^-1, is obtained during the structural transition induced by an external magnetic field of 50 kOe at a temperature of ∼361 K. Moreover, tiny positive magnetic entropy also appears when the applied field is lower than 5 kOe.

Original language	English
Pages (from-to)	184-188
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	616
DOIs	https://doi.org/10.1016/j.jallcom.2014.07.077
State	Published - 15 Dec 2014
Externally published	Yes

Keywords

Ferromagnetic shape memory alloys
Magnetocaloric effect (MCE)
Martensitic phase transformation
Ni-Mn-Ga-Fe microwires

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10.1016/j.jallcom.2014.07.077

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@article{ff5a7a64e0f7405091deceb32611e326,

title = "Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires",

abstract = "We reported the magnetocaloric properties of Heusler-type Ni 48Mn26Ga19.5Fe6.5 microwires with diameter of ∼50 μm which were fabricated by a precise melt-extraction method. The Fe-doped Ni-Mn-Ga microwires after chemical ordering heat-treatment exhibit negligible thermal and magnetic hysteresis along the axial direction due to their small magnetocrystalline anisotropy and display excellent magnetocaloric effect (MCE) for both magnetic (paramagnetic-ferromagnetic) phase transition and structural (austenite-martensite) phase transition. The maximum entropy change (-ΔSm), ∼4.7 J kg-1 K -1, is obtained during the structural transition induced by an external magnetic field of 50 kOe at a temperature of ∼361 K. Moreover, tiny positive magnetic entropy also appears when the applied field is lower than 5 kOe.",

keywords = "Ferromagnetic shape memory alloys, Magnetocaloric effect (MCE), Martensitic phase transformation, Ni-Mn-Ga-Fe microwires",

author = "Yanfen Liu and Xuexi Zhang and Dawei Xing and Hongxian Shen and Dongming Chen and Jingshun Liu and Jianfei Sun",

year = "2014",

month = dec,

day = "15",

doi = "10.1016/j.jallcom.2014.07.077",

language = "英语",

volume = "616",

pages = "184--188",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires

AU - Liu, Yanfen

AU - Zhang, Xuexi

AU - Xing, Dawei

AU - Shen, Hongxian

AU - Chen, Dongming

AU - Liu, Jingshun

AU - Sun, Jianfei

PY - 2014/12/15

Y1 - 2014/12/15

N2 - We reported the magnetocaloric properties of Heusler-type Ni 48Mn26Ga19.5Fe6.5 microwires with diameter of ∼50 μm which were fabricated by a precise melt-extraction method. The Fe-doped Ni-Mn-Ga microwires after chemical ordering heat-treatment exhibit negligible thermal and magnetic hysteresis along the axial direction due to their small magnetocrystalline anisotropy and display excellent magnetocaloric effect (MCE) for both magnetic (paramagnetic-ferromagnetic) phase transition and structural (austenite-martensite) phase transition. The maximum entropy change (-ΔSm), ∼4.7 J kg-1 K -1, is obtained during the structural transition induced by an external magnetic field of 50 kOe at a temperature of ∼361 K. Moreover, tiny positive magnetic entropy also appears when the applied field is lower than 5 kOe.

AB - We reported the magnetocaloric properties of Heusler-type Ni 48Mn26Ga19.5Fe6.5 microwires with diameter of ∼50 μm which were fabricated by a precise melt-extraction method. The Fe-doped Ni-Mn-Ga microwires after chemical ordering heat-treatment exhibit negligible thermal and magnetic hysteresis along the axial direction due to their small magnetocrystalline anisotropy and display excellent magnetocaloric effect (MCE) for both magnetic (paramagnetic-ferromagnetic) phase transition and structural (austenite-martensite) phase transition. The maximum entropy change (-ΔSm), ∼4.7 J kg-1 K -1, is obtained during the structural transition induced by an external magnetic field of 50 kOe at a temperature of ∼361 K. Moreover, tiny positive magnetic entropy also appears when the applied field is lower than 5 kOe.

KW - Ferromagnetic shape memory alloys

KW - Magnetocaloric effect (MCE)

KW - Martensitic phase transformation

KW - Ni-Mn-Ga-Fe microwires

UR - https://www.scopus.com/pages/publications/84905655928

U2 - 10.1016/j.jallcom.2014.07.077

DO - 10.1016/j.jallcom.2014.07.077

M3 - 文章

AN - SCOPUS:84905655928

SN - 0925-8388

VL - 616

SP - 184

EP - 188

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires

Abstract

Keywords

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