First-order magnetostructural transformation in Fe doped Mn-Co-Ge alloys

Zilong Wang; Zhihua Nie; Junxi Zeng; Ru Su; Yuepeng Zhang; Dennis E. Brown; Yang Ren; Yandong Wang

doi:10.1016/j.jallcom.2013.05.205

First-order magnetostructural transformation in Fe doped Mn-Co-Ge alloys

Zilong Wang
, Zhihua Nie
, Junxi Zeng
, Ru Su
, Yuepeng Zhang
, Dennis E. Brown
, Yang Ren
, Yandong Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

37 Citations (Scopus)

Abstract

Substitution of Fe for Mn atoms in Mn-Co-Ge alloys was employed for tailoring concurrent structural and magnetic phase transitions. First-order magnetostructural transition from paramagnetic hexagonal Ni₂In-type parent phase to ferromagnetic orthorhombic TiNiSi-type martensite was achieved. A giant magnetocaloric effect of AS_m = -9.74 J kg¹ K ¹ was obtained under magnetic field change of 5 T in the vicinity of phase transition temperature. This result indicates that Fe doped Mn-Co-Ge alloys are ideal candidates for magnetic refrigeration applications. Furthermore, the magnetic field-induced martensitic transformation, associated with a large lattice strain of ∼12%, was directly evidenced by in situ synchrotron high-energy X-ray diffraction. © 2013 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	486-490
Journal	Journal of Alloys and Compounds
Volume	577
DOIs	https://doi.org/10.1016/j.jallcom.2013.05.205
Publication status	Published - 2013
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

First-order magnetostructural
Magnetocaloric effect
Mn-Co-Ge alloys
Transformation
X-ray diffraction

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@article{eecf7f94dbc349b0aa19f6801309e6f3,

title = "First-order magnetostructural transformation in Fe doped Mn-Co-Ge alloys",

abstract = "Substitution of Fe for Mn atoms in Mn-Co-Ge alloys was employed for tailoring concurrent structural and magnetic phase transitions. First-order magnetostructural transition from paramagnetic hexagonal Ni2In-type parent phase to ferromagnetic orthorhombic TiNiSi-type martensite was achieved. A giant magnetocaloric effect of ASm = -9.74 J kg1 K 1 was obtained under magnetic field change of 5 T in the vicinity of phase transition temperature. This result indicates that Fe doped Mn-Co-Ge alloys are ideal candidates for magnetic refrigeration applications. Furthermore, the magnetic field-induced martensitic transformation, associated with a large lattice strain of ∼12\%, was directly evidenced by in situ synchrotron high-energy X-ray diffraction. {\textcopyright} 2013 Elsevier B.V. All rights reserved.",

keywords = "First-order magnetostructural, Magnetocaloric effect, Mn-Co-Ge alloys, Transformation, X-ray diffraction",

author = "Zilong Wang and Zhihua Nie and Junxi Zeng and Ru Su and Yuepeng Zhang and Brown, \{Dennis E.\} and Yang Ren and Yandong Wang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2013",

doi = "10.1016/j.jallcom.2013.05.205",

language = "English",

volume = "577",

pages = "486--490",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - First-order magnetostructural transformation in Fe doped Mn-Co-Ge alloys

AU - Wang, Zilong

AU - Nie, Zhihua

AU - Zeng, Junxi

AU - Su, Ru

AU - Zhang, Yuepeng

AU - Brown, Dennis E.

AU - Ren, Yang

AU - Wang, Yandong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2013

Y1 - 2013

N2 - Substitution of Fe for Mn atoms in Mn-Co-Ge alloys was employed for tailoring concurrent structural and magnetic phase transitions. First-order magnetostructural transition from paramagnetic hexagonal Ni2In-type parent phase to ferromagnetic orthorhombic TiNiSi-type martensite was achieved. A giant magnetocaloric effect of ASm = -9.74 J kg1 K 1 was obtained under magnetic field change of 5 T in the vicinity of phase transition temperature. This result indicates that Fe doped Mn-Co-Ge alloys are ideal candidates for magnetic refrigeration applications. Furthermore, the magnetic field-induced martensitic transformation, associated with a large lattice strain of ∼12%, was directly evidenced by in situ synchrotron high-energy X-ray diffraction. © 2013 Elsevier B.V. All rights reserved.

AB - Substitution of Fe for Mn atoms in Mn-Co-Ge alloys was employed for tailoring concurrent structural and magnetic phase transitions. First-order magnetostructural transition from paramagnetic hexagonal Ni2In-type parent phase to ferromagnetic orthorhombic TiNiSi-type martensite was achieved. A giant magnetocaloric effect of ASm = -9.74 J kg1 K 1 was obtained under magnetic field change of 5 T in the vicinity of phase transition temperature. This result indicates that Fe doped Mn-Co-Ge alloys are ideal candidates for magnetic refrigeration applications. Furthermore, the magnetic field-induced martensitic transformation, associated with a large lattice strain of ∼12%, was directly evidenced by in situ synchrotron high-energy X-ray diffraction. © 2013 Elsevier B.V. All rights reserved.

KW - First-order magnetostructural

KW - Magnetocaloric effect

KW - Mn-Co-Ge alloys

KW - Transformation

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/84884388010

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84884388010&origin=recordpage

U2 - 10.1016/j.jallcom.2013.05.205

DO - 10.1016/j.jallcom.2013.05.205

M3 - RGC 21 - Publication in refereed journal

SN - 0925-8388

VL - 577

SP - 486

EP - 490

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

First-order magnetostructural transformation in Fe doped Mn-Co-Ge alloys

Abstract

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Research Keywords

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