Thermal and spontaneous remagnetization in ferromagnetic Nd3 (Fe,Ti)29 and Nd3 (Fe,Re)29

Publication Type:
Journal Article
Citation:
Physical Review B - Condensed Matter and Materials Physics, 2007, 76 (5)
Issue Date:
2007-08-20
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Magnetization measurements at 10 K on the dc demagnetized ferromagnetic intermetallic compounds Nd3 (Fe,Ti)29 and Nd3 (Fe,Re)29 are reported and reveal the phenomena of thermal and spontaneous remagnetization. For both materials, thermal remagnetization is about an order of magnitude larger than the spontaneous remagnetization. The thermal remagnetization data are fitted using the model of Schumann and Jahn [J. Magn. Magn. Mater. 232, 231 (2001)], with the modification that the random magnetic field component is fully correlated between the demagnetization branch and the recoil branch, instead of uncorrelated. A Preisach approach is used to interpret the observed spontaneous magnetization. © 2007 The American Physical Society.
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