ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The growth of single crystals Tb2Fe17−xSix (x=0, 1, 2, 3, and 3.3) by the Czochralski method is performed. The crystal structure and magnetic properties are investigated. The substitution of silicon for iron leads to the reduction of the lattice parameters, and the significant increase of the Curie temperature from 413 to 526 K. The mean field analysis shows that the Fe–Fe exchange interaction is much strengthened while the Tb–Fe one is slightly weakened by the introduction of silicon. The anisotropy constants up to the sixth order are calculated by fitting the magnetization process of the samples at 1.5 K under the field up to 65 kOe. In addition, a narrow domain wall pinning-dominated process caused by the substitution of Si for Fe is confirmed and analyzed. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.368484
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