Re-entrant ferromagnet PrMn2Ge0.8Si1.2: Magnetocaloric effect | Zendy

Jianli Wang | Zendy; S. J. Campbell | Zendy; Rong Zeng | Zendy; Chung Kiak Poh | Zendy; Shi Xue Dou | Zendy; S. J. Kennedy | Zendy

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Re-entrant ferromagnet PrMn2Ge0.8Si1.2: Magnetocaloric effect

Author(s) -

Jianli Wang,

S. J. Campbell,

Rong Zeng,

Chung Kiak Poh,

Shi Xue Dou,

S. J. Kennedy

Publication year - 2009

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3059610

Subject(s) - magnetic refrigeration , ferromagnetism , condensed matter physics , antiferromagnetism , materials science , isothermal process , magnetic field , phase transition , thermodynamics , magnetization , physics , quantum mechanics

The structural and magnetic properties of the re-entrant ferromagnet PrMn2Ge0.8Si1.2 have been investigated by various experimental methods. Similar to the canonical re-entrant ferromagnet SmMn2Ge2, multiple magnetic phase transitions have been detected in PrMn2Ge0.8Si1.2 over the temperature range from 10 to 550 K with re-entrant ferromagnetism occurring around similar to 54 K. The magnetocaloric effect has been measured in terms of the isothermal magnetocaloric entropy change and found to be positive at the re-entrant ferromagnetic transition with a maximum value of around 1.9 J/kg K at 58 K for a magnetic field change of 0-3 T. On the other hand, the entropy change becomes negative (similar to-0.5 J/kg K) at the antiferromagnetic to ferromagnetic transition for the same field change. © 2009, American Institute of Physic

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