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Multiple magnetic transitions in Ag-substituted DyPt2
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10.1063/1.4742024
/content/aip/journal/jap/112/3/10.1063/1.4742024
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/3/10.1063/1.4742024
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The XRD pattern of DyPt2 and Dy(Pt0.94Ag0.06)2, indexed for a cubic laves phase C15 structure.

Image of FIG. 2.
FIG. 2.

(a) The temperature dependence of magnetization of Dy(Pt0.94Ag0.06)2 in 100 Oe magnetic field. The inset shows the magnified view of the low temperature portion of the curve. (b) The temperature dependence of magnetization of Dy(Pt0.94Ag0.06)2 and DyPt2 in 100 Oe magnetic field. The inset shows the temperature dependence of the inverse of magnetic susceptibility of the Dy(Pt0.94Ag0.06)2 alloy. The symbols represent the experimental data points and the solid straight line represents the Curie-Weiss law.

Image of FIG. 3.
FIG. 3.

The temperature dependence of magnetization of Dy(Pt0.94Ag0.06)2 in (a) 1 kOe, (b) 10 kOe, (c) 20 kOe, and (d) 50 kOe magnetic fields. The insets to (a) and (b) show the magnified view of the thermal hysteresis present between the MFCC(T) and MFCW(T) curves.

Image of FIG. 4.
FIG. 4.

(a) The field dependence of magnetization of Dy(Pt0.94Ag0.06)2 at 2 K shown in comparison with that of DyPt2. (b) The field dependence of magnetization of Dy(Pt0.94Ag0.06)2 at different temperatures.

Image of FIG. 5.
FIG. 5.

(a) The temperature dependence of heat capacity of Dy(Pt0.94Ag0.06)2 and DyPt2 in zero magnetic field. The inset shows the temperature dependence of entropy of Dy(Pt0.94Ag0.06)2 and DyPt2 in zero field. (b) Comparison of thetemperature dependence of heat capacity in zero field and the FCW magnetization curve for 100 Oe field for the Dy(Pt0.94Ag0.06)2 alloy at low temperatures.

Image of FIG. 6.
FIG. 6.

(a) The temperature dependence of heat capacity of Dy(Pt0.94Ag0.06)2 in different magnetic fields. (b) Comparison of the temperature dependence ofheat capacity and FCW magnetization in 20 kOe magnetic field for the Dy(Pt0.94Ag0.06)2 alloy at low temperatures.

Image of FIG. 7.
FIG. 7.

(a) The temperature dependence of isothermal change in entropy of Dy(Pt0.94Ag0.06)2 due to application of different values of magnetic fields. (b) Comparison of the temperature dependence of the isothermal change in entropy of Dy(Pt0.94Ag0.06)2 with that of DyPt2 due to application of 50 kOe magnetic field. The insets compare the maximum entropy changes and the refrigerant capacities in these two materials as functions of magnetic field.

Image of FIG. 8.
FIG. 8.

(a) The temperature dependence of the adiabatic temperature change in Dy(Pt0.94Ag0.06)2 due to application of different magnetic fields. (b) Comparison of the temperature dependence of the adiabatic change in temperature of Dy(Pt0.94Ag0.06)2 with that of DyPt2 due to application of 50 kOe magnetic field. The inset compares the maximum adiabatic temperature changes in these two materials as functions of magnetic field.

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/content/aip/journal/jap/112/3/10.1063/1.4742024
2012-08-02
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multiple magnetic transitions in Ag-substituted DyPt2
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/3/10.1063/1.4742024
10.1063/1.4742024
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