The effect of absorbed hydrogen on the magnetic properties of DyFe11Ti
| Autor: | R. Damianova, I. Naumova, A. Apostolov, R. Bezdushnyi, N. Stanev |
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| Rok vydání: | 1995 |
| Předmět: |
Materials science
Hydrogen Analytical chemistry chemistry.chemical_element Atmospheric temperature range Condensed Matter Physics Electronic Optical and Magnetic Materials Hydrogen atmosphere Tetragonal crystal system Magnetic anisotropy Nuclear magnetic resonance chemistry Condensed Matter::Strongly Correlated Electrons Absorption (chemistry) Néel temperature Solid solution |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 150:393-398 |
| ISSN: | 0304-8853 |
| Popis: | The effect of absorbed hydrogen on the structural and magnetic properties of DyFe 11 Ti has been investigated. The compound DyFe 11 Ti was hydrogenated to the composition DyFe 11 TiH x , where x ranges from 0 to 1.5. The absorption hydrogen pressure-composition isotherms of the hydrides indicate solid solution behavior. Hydrogen absorption does not change the tetragonal structure of the host compound but is accompanied by an expansion in unit cell volume. Magnetic characteristics of the host material and its hydrides (measured in situ in a hydrogen atmosphere) were investigated over the temperature range 77–700 K and at applied fields up to 12 kOe. Upon hydrogenation the magnetic ordering temperature T c as well as the spin-reorientation temperatures T sr are observed to increase. Moreover, the incorporation of hydrogen leads to an expansion of the temperature range in which the magnetic anisotropy of the rare-earth sublattice dominates over that of the iron sublattice. |
| Databáze: | OpenAIRE |
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