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Magnetocaloric effect and phase transition in Ni-Mn-Ga Heusler alloy.

Author(s) : ZHANG Z., LONG Y., WEN D.

Summary

The magnetic and structural phase transition (SPT) and the magnetic entropy change in the Ni-Mn-Ga Heusler alloy was experimentally investigated. The authors observed a plateau in the peak of the magnetic entropy change. The distance between the two peaks is 4 K. The two peaks are separately caused by SPT and a magnetic transition. With evidence the magnetic entropy change plateau is also shown by the ac-susceptibility which shows that the austenite Curie temperature is slightly lower than the martensitic transition temperature. This phenomenon seems to provide a possibility to extend the peak of the magnetic entropy change.

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Pages: 2005-4

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Details

  • Original title: Magnetocaloric effect and phase transition in Ni-Mn-Ga Heusler alloy.
  • Record ID : 2006-1261
  • Languages: English
  • Source: 1st International Conference on Magnetic Refrigeration at Room Temperature
  • Publication date: 2005/09/27

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