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Large reversible magnetocaloric effects in ErFeSi compound under low magnetic field change around liquid hydrogen temperature
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10.1063/1.4794415
/content/aip/journal/apl/102/9/10.1063/1.4794415
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/9/10.1063/1.4794415

Figures

Image of FIG. 1.
FIG. 1.

(a) Temperature dependences of ZFC and FC magnetizations for ErFeSi compound under a magnetic field of 0.05 T. The inset shows the temperature variation of inverse dc susceptibility (χ −1) fitted to the Curie-Weiss law in the field of 1 T. (b) The ac susceptibilities of ErFeSi collected at various frequencies under a zero dc field. The inset shows the magnetic hysteresis loop of ErFeSi compound at 5 K in low magnetic fields.

Image of FIG. 2.
FIG. 2.

Temperature dependences of the ZFC and FC magnetizations for ErFeSi under various magnetic fields.

Image of FIG. 3.
FIG. 3.

(a) Magnetization isotherms and (b) Arrott plots of ErFeSi around the ordering temperature in different temperature steps.

Image of FIG. 4.
FIG. 4.

Temperature dependence of heat capacity (CP ) for ErFeSi measured in the fields of 0, 2, and 5 T, respectively.

Image of FIG. 5.
FIG. 5.

(a) Magnetic entropy changes of ErFeSi calculated from magnetizations (open symbols) and heat capacity measurements (full symbols) as a function of temperature for different magnetic field changes up to 5 T. (b) Adiabatic temperature changes of ErFeSi as a function of temperature for the field changes of 2 and 5 T, respectively.

Tables

Generic image for table
Table I.

The ordering temperature (Tord ), the magnetic entropy change ΔSM , adiabatic temperature change ΔTad , and the refrigerant capacity RC for ErFeSi and some other refrigerant materials with a magnetic ordering temperature around liquid hydrogen temperature (20.3 K).

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/content/aip/journal/apl/102/9/10.1063/1.4794415
2013-03-04
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Large reversible magnetocaloric effects in ErFeSi compound under low magnetic field change around liquid hydrogen temperature
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/9/10.1063/1.4794415
10.1063/1.4794415
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