Giant magnetocaloric effect in MnCoGe with minimal Ga substitution

Danlu Zhang; Zhihua Nie; Zilong Wang; Lian Huang; Qinghua Zhang; Yan Dong Wang

doi:10.1016/j.jmmm.2015.03.095

Giant magnetocaloric effect in MnCoGe with minimal Ga substitution

Danlu Zhang, Zhihua Nie^*, Zilong Wang, Lian Huang, Qinghua Zhang, Yan Dong Wang

^*Corresponding author for this work

School of Material Science and Engineering

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

44 Citations (Scopus)

Abstract

Abstract The effects of Ga-doping on the phase transition behaviors and magnetocaloric properties of MnCoGe alloys are systematically investigated through calorimetry and magnetic measurements. The magneto-structural coupling between the structural and magnetic transitions is achieved in the MnCoGe_1-xGa_x alloys by decreasing the structural transition temperature via Ga substitution. An 80 K Curie-temperature window is established between Curie temperatures of austenite and martensite phases. Within the window, a magnetic entropy change of 34 J kg^-1 K^-1 can be obtained near room temperature under the application of a 5 T magnetic field.

Original language	English
Article number	60058
Pages (from-to)	107-110
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	387
DOIs	https://doi.org/10.1016/j.jmmm.2015.03.095
Publication status	Published - 1 Aug 2015

Keywords

First-order magnetic transition
Magneto-structural coupling
Magnetocaloric effect
MnCoGe alloys

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10.1016/j.jmmm.2015.03.095

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title = "Giant magnetocaloric effect in MnCoGe with minimal Ga substitution",

abstract = "Abstract The effects of Ga-doping on the phase transition behaviors and magnetocaloric properties of MnCoGe alloys are systematically investigated through calorimetry and magnetic measurements. The magneto-structural coupling between the structural and magnetic transitions is achieved in the MnCoGe1-xGax alloys by decreasing the structural transition temperature via Ga substitution. An 80 K Curie-temperature window is established between Curie temperatures of austenite and martensite phases. Within the window, a magnetic entropy change of 34 J kg-1 K-1 can be obtained near room temperature under the application of a 5 T magnetic field.",

keywords = "First-order magnetic transition, Magneto-structural coupling, Magnetocaloric effect, MnCoGe alloys",

author = "Danlu Zhang and Zhihua Nie and Zilong Wang and Lian Huang and Qinghua Zhang and Wang, {Yan Dong}",

year = "2015",

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day = "1",

doi = "10.1016/j.jmmm.2015.03.095",

language = "English",

volume = "387",

pages = "107--110",

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TY - JOUR

T1 - Giant magnetocaloric effect in MnCoGe with minimal Ga substitution

AU - Zhang, Danlu

AU - Nie, Zhihua

AU - Wang, Zilong

AU - Huang, Lian

AU - Zhang, Qinghua

AU - Wang, Yan Dong

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Abstract The effects of Ga-doping on the phase transition behaviors and magnetocaloric properties of MnCoGe alloys are systematically investigated through calorimetry and magnetic measurements. The magneto-structural coupling between the structural and magnetic transitions is achieved in the MnCoGe1-xGax alloys by decreasing the structural transition temperature via Ga substitution. An 80 K Curie-temperature window is established between Curie temperatures of austenite and martensite phases. Within the window, a magnetic entropy change of 34 J kg-1 K-1 can be obtained near room temperature under the application of a 5 T magnetic field.

AB - Abstract The effects of Ga-doping on the phase transition behaviors and magnetocaloric properties of MnCoGe alloys are systematically investigated through calorimetry and magnetic measurements. The magneto-structural coupling between the structural and magnetic transitions is achieved in the MnCoGe1-xGax alloys by decreasing the structural transition temperature via Ga substitution. An 80 K Curie-temperature window is established between Curie temperatures of austenite and martensite phases. Within the window, a magnetic entropy change of 34 J kg-1 K-1 can be obtained near room temperature under the application of a 5 T magnetic field.

KW - First-order magnetic transition

KW - Magneto-structural coupling

KW - Magnetocaloric effect

KW - MnCoGe alloys

UR - http://www.scopus.com/inward/record.url?scp=84926352372&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2015.03.095

DO - 10.1016/j.jmmm.2015.03.095

M3 - Article

AN - SCOPUS:84926352372

SN - 0304-8853

VL - 387

SP - 107

EP - 110

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

M1 - 60058

ER -

Giant magnetocaloric effect in MnCoGe with minimal Ga substitution

Abstract

Keywords

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