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Adiabatic Temperature Change in Metamagnetic Ni(Co)-Mn-Al Heusler Alloys

Khovaylo, Vladimir and Lyange, Maria and Skokov, Konstantin and Gutfleisch, Oliver and Chatterjee, Ratnamala and Xu, Xiao and Kainuma, Ryosuke (2013):
Adiabatic Temperature Change in Metamagnetic Ni(Co)-Mn-Al Heusler Alloys.
In: Materials Science Forum, Trans Tech Publications Switzerland, pp. 446-450, 738-739, ISSN 1662-9752, [Online-Edition: http://dx.doi.org/10.4028/www.scientific.net/MSF.738-739.446],
[Article]

Abstract

Two representatives of Ni(Co)-Mn-Al metamagnetic shape memory alloy system, Ni45Co5Mn31Al19 and Ni35Co15Mn35Al15, have been studied with respect to their magnetocaloric properties. Experimental study of the magnetocaloric effect by a direct measurement of the adiabatic temperature change ΔTad revealed that in both the samples ΔTad depends on the measurement protocol as well as on the magnetic prehistory of the samples. For the applied magnetic field μ0H = 1.93 T, the largest adiabatic temperature change, |ΔTad| ≈ 0.7 K, has been observed in the Ni35Co15Mn35Al15 sample at T = 464 K.

Item Type: Article
Erschienen: 2013
Creators: Khovaylo, Vladimir and Lyange, Maria and Skokov, Konstantin and Gutfleisch, Oliver and Chatterjee, Ratnamala and Xu, Xiao and Kainuma, Ryosuke
Title: Adiabatic Temperature Change in Metamagnetic Ni(Co)-Mn-Al Heusler Alloys
Language: English
Abstract:

Two representatives of Ni(Co)-Mn-Al metamagnetic shape memory alloy system, Ni45Co5Mn31Al19 and Ni35Co15Mn35Al15, have been studied with respect to their magnetocaloric properties. Experimental study of the magnetocaloric effect by a direct measurement of the adiabatic temperature change ΔTad revealed that in both the samples ΔTad depends on the measurement protocol as well as on the magnetic prehistory of the samples. For the applied magnetic field μ0H = 1.93 T, the largest adiabatic temperature change, |ΔTad| ≈ 0.7 K, has been observed in the Ni35Co15Mn35Al15 sample at T = 464 K.

Journal or Publication Title: Materials Science Forum
Volume: 738-739
Publisher: Trans Tech Publications Switzerland
Uncontrolled Keywords: magnetocaloric effect, martensitic transformations, Heusler alloys, first order magnetic phase transitions
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 26 Apr 2013 07:35
Official URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.738-739.446
Identification Number: doi:10.4028/www.scientific.net/MSF.738-739.446
Funders: This work was supported by the Russian Foundation for Basic Research (grant No. 10-02-00721-а), the joint RFBR-DST project (grant No.12-02-92700), the Creation and Development Program of NUST “MISiS”, and by the Federal program for Scientific and Pedagogical staff of innovative Russia.
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