X-Ray Diffraction Study of CeT2Al10 (T = Ru, Os) at Low Temperatures and under Pressures.

We have carried out a powder X-ray diffraction investigation on antiferromagnetic Kondo semiconductors CeRu₂A_l10 and CeOs₂A_l10 at low temperatures and under high pressures as well as the structural investigation on single crystal of these compounds. The results of powder X-ray studies of CeRu₂A_l10 and CeOs₂A₁₀ indicate that these compounds do not have structural transition at its antiferromagnetic ordering temperature. The results of single crystal structural refinement indicate that the b-axis of this crystal structure is insensitive not only to pressure but also to temperature and that the effect of cooling to Ce-Ce distance for CeRu₂A₁₀ is the same as that for CeOs₂A_l10. [ABSTRACT FROM AUTHOR]