Influence of the magnetic state on the structure and thermal expansion in rare earth compounds

E. Gratz, A. Lindbaum

Research output: Contribution to journalConference articlepeer-review

Abstract

Using x-ray powder diffraction we investigated the thermal expansion of some selected nonmagnetic compounds (YAl2, YNi2 and YCo2) and some isostructural magnetic Rare Earth-Cobalt compounds (RECo2) in the temperature range from 4K up to 450 K. By comparing the nonmagnetic Y-based compounds we could show that there is a contribution of the spin fluctuations to the thermal expansion in YCo2. In the magnetically ordering RECo2 compounds the induced 3d-magnetism gives rise to large volume anomalies at the magnetic ordering temperature Tc. Below Tc there is also a distortion of the cubic unit cell because of the interaction of the magnetically ordered RE-ions with the anisotropic crystal field.

Original languageEnglish
Pages (from-to)461-466
Number of pages6
JournalMaterials Science Forum
Volume166-169
Issue numberpt 2
DOIs
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2) - Vienna, Austria
Duration: 25 Sep 199328 Sep 1993

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