Crystal structure and magnetic properties of LaCo13−xSix compounds
- 28 March 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (13) , 1650-1652
- https://doi.org/10.1063/1.111820
Abstract
Tetragonal LaCo13−xSix compounds have been obtained by annealing cubic LaCo13−xSix compounds. The space group for the tetragonal structure is I4/mcm. Atomic ordering occurs in the tetragonal LaCo13−xSix compounds, i.e., Si atoms show a strong preference for occupying a specific crystallographic position. The tetragonal LaCo13−xSix compounds are ferromagnetic with Curie temperatures higher than 900 K. The magnetic moment per Co atom in the tetragonal LaCo13−xSix compounds decreases with Si content, which can be explained by the rigid‐band model. The tetragonal LaCo13−xSix compounds are expected to be promising candidates for permanent magnets purpose.Keywords
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