Abstract
Crystallographic properties of Nd2Fe17N3 have been investigated using powder neutron diffraction techniques at pressures up to 7.3 GPa. With increasing pressure, the unit cell volume of Nd 2Fe17N3 decreases almost linearly at a rate of 6.1 Å3/GPa without undergoing a phase transformation or expelling the interstitial nitrogen atoms. The observed rate of contraction corresponds to a bulk modulus of 1.4x1011 N/m2 for Nd2Fe17N3. The unit cell volume of Nd 2Fe17N3 at 7.3 GPa is approximately equal to that of Nd2Fe17 at atmospheric pressure. Even though the unit cell of Nd2Fe17 expands anisotropically due to nitrogenation, contraction of the Nd2Fe17N3 unit cell under pressure appears to be isotropic with lattice parameters a and c decreasing by approximately 1.8% as the sample pressure increases from ambient to 7.3 GPa. © 1998 American Institute of Physics.
Recommended Citation
G. K. Marasinghe et al., "Pressure Induced Reversal of the Volume Expansion Caused by Interstitial Nitrogen in Nd2Fe17N3," Journal of Applied Physics, vol. 83, no. 11, pp. 6911 - 6913, American Institute of Physics, Jan 1998.
The definitive version is available at https://doi.org/10.1063/1.367908
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
© 2024 American Institute of Physics, All rights reserved.
Publication Date
01 Jan 1998
