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Journal of Materials Science

, Volume 44, Issue 13, pp 3472–3475 | Cite as

Magnetic transitions and magnetocaloric effects in Fe0.75Mn1.35As

  • N. K. SunEmail author
  • D. Li
  • Z. D. Zhang
Article

Abstract

In Fe0.75Mn1.35As compound, a metamagnetic transition from an antiferromagnetic phase to a ferrimagnetic phase can be induced above its phase transition temperature Ts = 165 K by an external magnetic field, which leads to large magnetocaloric effects around Ts. The sign of the magnetic entropy change ΔSM in the Fe0.75Mn1.35As compound is negative, not as expected as an inverse magnetocaloric effect, and the maximum value of ΔSM is 4.2 J/kg K at 167.5 K for a magnetic field change of 5 T. Although it induces an irreversible lattice expansion, the cycling of a magnetic field does not induce an irreversible change in the magnetic transitions and magnetocaloric behaviors. The antiferromagnetism-related metamagnetic transitions with a large magnetic entropy change may provide with an opportunity in searching novel materials for magnetic refrigeration.

Keywords

Magnetic Transition Magnetocaloric Effect Magnetic Entropy Change Magnetic Refrigeration Magnetic Field Change 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work has been supported by the National Natural Science Foundation of China under Grant No. 50331030.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.School of ScienceShenyang Ligong UniversityShenyangPeople’s Republic of China
  2. 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, and International Centre for Materials PhysicsChinese Academy of SciencesShenyangPeople’s Republic of China

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