| Autor: |
Kirsten Rupprecht, B. Bielemeier, Gerhard Wortmann, E. V. Sampathkumaran |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Journal of Physics: Conference Series. 217:012122 |
| ISSN: |
1742-6596 |
| DOI: |
10.1088/1742-6596/217/1/012122 |
| Popis: |
With 151Eu-Mossbauer spectroscopy and other methods the complex magnetic properties of Eu2PdSi3, arising from the two crystallographically different lattice sites of the Eu2+ ions, have been already studied. Here we study the impact of magnetic dilution of the magnetic Eu2+ sites by non-magnetic Y3+ ions. A previous specific heat study has found reduced magnetic ordering temperatures with strong indication of disorder effects like in magnetic spin glasses. Here we provide from 151Eu-Mossbauer spectroscopy detailed information of the impact of Y3+ substitution on the magnetic properties of the two lattice sites, well distinguishable in the 151Eu-spectra. Since the substitution of the larger Eu2+ ions by the smaller Y3+ ions is connected with a lattice contraction, we also applied high pressure to the Eu2PdSi3 sample and observed drastic changes in the magnetic properties originating from a valence transition towards Eu3+ for one of the Eu sites. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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