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Critical behavior and the universal curve for magnetocaloric effect in textured Mn5Ge3− x Al x ribbons
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10.1063/1.4801744
/content/aip/journal/jap/113/17/10.1063/1.4801744
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4801744

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns for MnGeAl powders and ribbons. Inset: SEM image of the surface of MnGeAl ribbon.

Image of FIG. 2.
FIG. 2.

(a) Isothermal magnetization curves of MnGeAl ribbons in the vicinity of . (b) Arrott plot isotherms of vs / curves.

Image of FIG. 3.
FIG. 3.

(a) Temperature dependence of the spontaneous magnetization (left) and the inverse initial susceptibility (right). (b) KF plots for the spontaneous magnetization (left) and the inverse initial susceptibility (right). (c) vs curve at the Curie temperature. (d) Logarithmic scaling plot of vs in the critical region.

Image of FIG. 4.
FIG. 4.

(a) Entropy changes of different compositions under different external magnetic fields. (b) The universal behavior of MnGe Al compounds.

Tables

Generic image for table
Table I.

The Curie temperature and critical exponents for different compositions and theoretical models, as well as the peak entropy change at 3 T.

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/content/aip/journal/jap/113/17/10.1063/1.4801744
2013-04-12
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Critical behavior and the universal curve for magnetocaloric effect in textured Mn5Ge3−xAlx ribbons
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4801744
10.1063/1.4801744
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