ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The crystal-field in Sm2Fe17N3−δ and Sm(Fe11Ti)N1−δ due to interstitial nitrogen has been investigated. Intrinsic parametrization in the superposition model allows separation of the crystal field created by a neighboring nitrogen atom from a purely geometrical factor, which is different for Sm2Fe17N3−δ and Sm(Fe11Ti)N1−δ. Using published magnetic data, values for the intrinsic parameter A˜2 per nitrogen atom of A˜2=200±60 Ka0−2 and A˜2=270±60 Ka0−2 for Sm2Fe17N3−δ and Sm(Fe11Ti)N1−δ, respectively, are obtained. Because of charge penetration, which is discussed in the form of an explicit crystal-field weight function, it is not possible to interpret A20 or A˜2 as crystal-field parameters independent of the 4f ion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.352439
