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Giant magnetocaloric effect in Ho12Co7 compound
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10.1063/1.4788706
/content/aip/journal/apl/102/2/10.1063/1.4788706
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/2/10.1063/1.4788706
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Rietveld refined powder x-ray diffraction pattern of Ho12Co7 at room temperature. The observed data are indicated by crosses and the calculated profile is the continuous line overlaying them. The short vertical lines indicate the angular positions of the Bragg peaks of Ho12Co7. The lower curve is the difference between the observed and calculated intensity.

Image of FIG. 2.
FIG. 2.

(a) Temperature dependences of ZFC and FC magnetization for Ho12Co7 under a magnetic field of 0.1 T and the inset shows the reciprocal magnetic susceptibility χ−1 versus temperature. (b) Temperature dependences of magnetizations for Ho12Co7 under different magnetic field. (c) Temperature dependences of heat capacity for different magnetic field.

Image of FIG. 3.
FIG. 3.

(a) Magnetic isothermals of Ho12Co7 in the temperature range of 3–50 K. (b) Magnetic isothermals in the low magnetic field region at 6 K, 9 K, 11 K, and 13 K. (c) Magnetic isothermals in the low magnetic field region at 15 K, 17 K, and 19 K. (d) Magnetic isothermals in the low magnetic field region at 21 K, 24 K, and 27 K.

Image of FIG. 4.
FIG. 4.

Arrott plot of Ho12Co7 in a temperature range of 6–33 K with the temperature step of 2 K or 3 K.

Image of FIG. 5.
FIG. 5.

(a) Temperature dependences of magnetic entropy change (ΔSM ) calculated from magnetization and heat capacity data for field changes of 0–0.5 T, 0–2 T, and 0–5 T, respectively. (b) Temperature dependences of magnetic entropy change (ΔSM ) calculated from magnetization only for field changes of 0–0.2 T, 0–0.3 T, 0–0.4 T, and 0–0.5 T, respectively.

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/content/aip/journal/apl/102/2/10.1063/1.4788706
2013-01-18
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Giant magnetocaloric effect in Ho12Co7 compound
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/2/10.1063/1.4788706
10.1063/1.4788706
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