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Determination of the entropy changes in the compounds with a first-order magnetic transition
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10.1063/1.2425033
/content/aip/journal/apl/90/3/10.1063/1.2425033
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/3/10.1063/1.2425033
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Magnetization isotherms of and measured in the field increase process. Hatched area marks the area that contributes to entropy change. Numbers in the figure indicate the temperature in units of kelvin.

Image of FIG. 2.
FIG. 2.

Temperature-dependent entropy changes of calculated from magnetic data (solid circles) and heat capacity (open circles). The peak value drops from if only the contributions from the metamagnetic transition are considered (marked by an arrow). has been set . Solid lines are guides for the eyes.

Image of FIG. 3.
FIG. 3.

Heat capacity of measured under the fields of and .

Image of FIG. 4.
FIG. 4.

Schematic diagram showing the calculation of entropy change when stepwise magnetic behaviors occur.

Image of FIG. 5.
FIG. 5.

Entropy changes of MnAs under a pressure of . Solid symbols represent the results calculated by the Maxwell relation, and open symbols are the contributions from the metamagnetic transition only. Inset plot shows the magnetization isotherms measured under the pressure of (Ref. 5).

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/content/aip/journal/apl/90/3/10.1063/1.2425033
2007-01-18
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Determination of the entropy changes in the compounds with a first-order magnetic transition
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/3/10.1063/1.2425033
10.1063/1.2425033
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