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Normal or inverse magnetocaloric effects at the transition between antiferromagnetism and ferromagnetism
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10.1063/1.4729122
/content/aip/journal/apl/100/24/10.1063/1.4729122
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/24/10.1063/1.4729122

Figures

Image of FIG. 1.
FIG. 1.

Schematic magnetic field vs temperature phase diagrams for phase transitions between AF and F. Six types of diagrams are shown, of which only the types ①, ②, and ③ do exist.

Image of FIG. 2.
FIG. 2.

(a) Temperature dependencies of the ZFC and FC magnetization of Mn1.05Ni0.85Ge in a magnetic field of 0.1 T, with T t and TC indicating the transition temperatures from AF to F and from F to P, respectively; (b) Temperature dependence of the ZFC magnetization of Mn1.05Ni0.85Ge at magnetic fields of 0.1, 0.5, 1, 2, and 5 T; (c) Dependence of the critical magnetic field of the AF to F transition on temperature.

Image of FIG. 3.
FIG. 3.

(a) Magnetic isotherms of CrO1.86F0.14, measured from 45 to 110 K with temperature steps of 5 K. The inset shows the temperature dependencies of the ZFC and FC magnetization in a magnetic field of 0.05 T, with T t and TC indicating the transition temperatures from AF to FM and from FM to PM, respectively; (b) Temperature dependence of the critical magnetic field of the AF to FM transition. (c) Magnetic-entropy change at magnetic-field changes from 0 to 1.5 T.

Image of FIG. 4.
FIG. 4.

(a) Temperature dependencies of the ZFC and FC magnetization of Tb3Co in a magnetic field of 0.05 T, with T t indicating the transition temperature from AF to F. The inset displays the temperature dependence of the ZFC reduced magnetization at different magnetic fields. (b) Temperature dependence of the critical magnetic field of the AF to F transition. (c) Magnetic-entropy change at magnetic-field changes from 0 to 1 T.

Tables

Generic image for table
Table I.

Parameters for materials exhibiting a normal or an inverse MCE at the AF to F transition: The type of magnetic transition and phase diagram, the sign of , the magnetic-ordering temperature (T N, T C), the transition temperature T t in the absence of a magnetic field, and the type of MCE.

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/content/aip/journal/apl/100/24/10.1063/1.4729122
2012-06-13
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Normal or inverse magnetocaloric effects at the transition between antiferromagnetism and ferromagnetism
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/24/10.1063/1.4729122
10.1063/1.4729122
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