Spin-Glass-like Transition and Hall Resistivity of Y2-xBixIr2O7
Abstract
Various physical properties of the pyrochlore oxide Y2-xBixIr2O7 have been studied. The magnetizations M measured under the conditions of the zero-field-cooling (ZFC) and the field-cooling (FC) have different values below the temperature T=TG. The anomalous T-dependence of the electrical resistivities ρ and the thermoelectric powers S observed at around TG indicates that the behavior of the magnetization is due to the transition to the state with the spin freezing. In this spin-frozen state, the Hall resistivities ρH measured with the ZFC and FC conditions are found to have different values, too, in the low temperature phase (T<TG). Possible mechanisms which induce such the hysteretic behavior are discussed.
- Publication:
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Journal of the Physical Society of Japan
- Pub Date:
- May 2003
- DOI:
- arXiv:
- arXiv:cond-mat/0302437
- Bibcode:
- 2003JPSJ...72.1226A
- Keywords:
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- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Materials Science
- E-Print:
- 9 pages, 7 figures, J. Phys. Soc. Jpn. 72 (2003) No.5