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Giant magnetocaloric effect in antiferromagnetic borocarbide superconductor RNi2B2C (R = Dy, Ho, and Er) compounds
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10.1063/1.3625250
/content/aip/journal/jap/110/4/10.1063/1.3625250
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/4/10.1063/1.3625250

Figures

Image of FIG. 1.
FIG. 1.

Temperature dependence of zero-field electrical resistivity ρ(T) for RNi2B2C (R = Dy, Ho, and Er) compounds from 2 to 20 K.

Image of FIG. 2.
FIG. 2.

Temperature dependence of the reciprocal susceptibility 1/χ under an external magnetic field of 1 T for RNi2B2C (R = Dy, Ho, and Er) compounds. Inset shows the temperature dependence of magnetization under the magnetic field of 1 T for RNi2B2C (R = Dy, Ho, and Er) compounds.

Image of FIG. 3.
FIG. 3.

(Color online) Magnetic isothermals with increasing field at some selected low temperatures for (a) DyNi2B2C, (b) HoNi2B2C, and (c) ErNi2B2C. The curves of H/M vs M 2 for (d) DyNi2B2C, (e) HoNi2B2C, and (f) ErNi2B2C at some selected temperatures.

Image of FIG. 4.
FIG. 4.

The temperature dependence of heat capacity under the magnetic field of 0 T, 2 T, 4 T, and 5 T for RNi2B2C (R = Dy, Ho, and Er) compounds.

Image of FIG. 5.
FIG. 5.

The isothermal magnetic entropy change − ΔS M as a function of temperature for RNi2B2C (R = Dy, Ho, and Er) compounds with the magnetic field changes of 2 T, 4 T, and 5 T.

Image of FIG. 6.
FIG. 6.

The adiabatic temperature change ΔT ad as a function of temperature for RNi2B2C (R = Dy, Ho, and Er) compounds with the magnetic field changes of 2 T, 4 T, and 5 T.

Tables

Generic image for table
Table I.

The transition temperature (T M) and the maximum values of magnetocaloric parameters (− ΔS M max and ΔT ad) as well as the relative cooling power with a magnetic field change of 5 T for RNi2B2C (R = Dy, Ho, and Er) and some MCE materials with T M around 15 K.

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/content/aip/journal/jap/110/4/10.1063/1.3625250
2011-08-22
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Giant magnetocaloric effect in antiferromagnetic borocarbide superconductor RNi2B2C (R = Dy, Ho, and Er) compounds
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/4/10.1063/1.3625250
10.1063/1.3625250
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