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Effect of pressure on the magnetocaloric properties of nickel-rich Ni–Mn–Ga Heusler alloys
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10.1063/1.3099596
/content/aip/journal/jap/105/7/10.1063/1.3099596
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3099596

Figures

Image of FIG. 1.
FIG. 1.

(a) Heating and (b) cooling part of differential scanning calorimetry study of all the Ni–Mn–Ga samples (rate 5 K/min).

Image of FIG. 2.
FIG. 2.

XRD pattern of (a) , (b) , (c) , and (d) at room temperature.

Image of FIG. 3.
FIG. 3.

Surface morphology of samples and at room temperature as observed by an optical microscope.

Image of FIG. 4.
FIG. 4.

Temperature hysteresis of structural and magnetic transitions of four samples observed at ambient pressure and in the presence of 8 kbar pressure [(b) and (c) only].

Image of FIG. 5.
FIG. 5.

vs curves of sample with , 20 kOe, and 50 kOe.

Image of FIG. 6.
FIG. 6.

Magnetic isotherms of sample at ambient pressure (a) from 279 to 303 K at the interval of 3 K and (b) from 287 to 292 K at the interval of 0.5 K.

Image of FIG. 7.
FIG. 7.

Temperature dependence of the isothermal magnetic entropy change of sample at ambient pressure and in the presence of 8 kbar pressure.

Image of FIG. 8.
FIG. 8.

Magnetic isotherms of sample in the presence of 8 kbar pressure (a) from 290 to 320 K at the interval of 3 K and (b) from 295 to 300 K at the interval of 0.5 K.

Image of FIG. 9.
FIG. 9.

Temperature dependence of specific heat at a constant pressure, of sample .

Tables

Generic image for table
Table I.

, , , , , and of alloys.

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/content/aip/journal/jap/105/7/10.1063/1.3099596
2009-04-06
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of pressure on the magnetocaloric properties of nickel-rich Ni–Mn–Ga Heusler alloys
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3099596
10.1063/1.3099596
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