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Electrolytic hydriding of LaFe(13-x)Si(x) alloys: a simple and effective method for adjusting the Curie temperature.

Number: sect. 2

Author(s) : LYUBINA J., HANNEMANN U., RYAN M. P., et al.

Summary

In the family of LaFe(13–x)Si(x) alloys the Curie temperature can be adjusted in the range relevant for near-room temperature magnetic cooling by interstitial hydrogen insertion into the La(Fe,Si)13 lattice. Here, the authors demonstrate a simple, effective, low-temperature and readily available method for tuning the operation temperature of LaFe(13-x)Si(x)-type alloys via electrolytic hydriding. Materials processed by this significantly more economic procedure have the same high level magnetic properties as in high temperature gas-phase processed materials. In addition, they observe that due to a larger lattice-cell volume the ferromagnetic state promotes a higher hydrogen absorption rate due to more facile diffusion. This effect can only be exploited in low-temperature (electrolytic) hydriding.

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Pages: 213-218

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Details

  • Original title: Electrolytic hydriding of LaFe(13-x)Si(x) alloys: a simple and effective method for adjusting the Curie temperature.
  • Record ID : 30005537
  • Languages: English
  • Source: 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
  • Publication date: 2012/09/17

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