Abstract
The 295 K unit cell parameters of Pr2Fe17Hx, where x is 0, 1, 2, and 3, have been determined by x-ray diffraction. Upon hydrogenation, the unit cell volume expands anisotropically with a 1.2% expansion of the a axis and no expansion of the c axis for x=3. The Curie temperatures are 286, 374, 440, and 484 K, for x=0, 1, 2, and 3, respectively. The Mössbauer spectra have been measured between 4.2 and 295 K, and the spectra of Pr2Fe17H and Pr2Fe17H2, obtained above 80 K, and those of Pr2Fe17H3, obtained above 120 K, have been analyzed with a seven sextet model, a model which corresponds to basal magnetic anisotropy. The Mössbauer spectra of Pr2Fe17H3 change dramatically upon cooling below 80 K, and between 4.2 and 75 K they are well fit with a four sextet model which corresponds to axial magnetization. Between 80 and 120 K, the spectra are very complex and, hence, the Mössbauer spectra reveal a spin reorientation which occurs between 80 and 120 K in Pr2Fe17H3.
Recommended Citation
F. Grandjean et al., "Structural, Magnetic, and Mössbauer Spectral Properties of Pr₂Fe₁₇Hₓ Where X Is 1, 2, and 3," Journal of Applied Physics, vol. 85, no. 8 II A, pp. 4654 - 4656, American Institute of Physics (AIP), Apr 1999.
The definitive version is available at https://doi.org/10.1063/1.370496
Department(s)
Chemistry
International Standard Serial Number (ISSN)
0021-8979
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1999 American Institute of Physics (AIP), All rights reserved.
Publication Date
01 Apr 1999
