Abstract
A neutron-diffraction investigation of a series of Pr2(Fe 1-xMnx)14B samples, with x values of 0.00, 0.11, 0.22, 0.30, and 0.35, reveals a preference for the manganese to occupy the 8j2 transition-metal site,the transition-metal site with the largest Wigner-Seitz cell volume. Similar site occupancies have been reported previously for Er2(Fe1-xMnx) 14B and Y2(Fe1-xMnx) 14B. An analysis of the 295-K Mössbauer spectrum of Pr2(Fe0.89Mn0.11)14B indicates that the internal hyperfine fields on the six iron sites are more substantially reduced from those found in Pr2Fe1 4B than would be expected from a simple magnetic dilution with manganese. The extent of the field reduction for a specific site increases with the number of manganese near neighbors for the site. Fits of the Mössbauer spectra of Pr2(Fe0.78Mn0.22)1 4B, Pr2(Fe0.70Mn0.30) 14B, and Pr2(Fe0.65Mn 0.35)14B, which are paramagnetic at room temperature, give quadrupole splittings consistent with the quadrupole interactions in Pr2Fe14B.
Recommended Citation
O. A. Pringle et al., "Neutron-Diffraction and Mössbauer-Effect Studies of Pr₂(Fe₁₋ₓMnₓ)₁₄B," Journal of Applied Physics, vol. 67, no. 9, pp. 4762 - 4764, American Institute of Physics (AIP) Publishing, Dec 1993.
The definitive version is available at https://doi.org/10.1063/1.344778
Department(s)
Physics
Second Department
Chemistry
International Standard Serial Number (ISSN)
0021-8979
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1990 American Institute of Physics (AIP) Publishing, All rights reserved.
Publication Date
01 Dec 1993
