Electrical transport and EPR properties of the α, β, and γ phases ofFe2WO6
| Autor: | M. Wabia, J. Typek, I. Rychlowska-Himmel, S.K. Patapis, Vlassis Likodimos, N. Guskos, L. C. Palilis, S. Glenis |
|---|---|
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Physical Review B. 60:7687-7690 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.60.7687 |
| Popis: | The polymorphic modifications \ensuremath{\alpha}, \ensuremath{\beta}, and $\ensuremath{\gamma}{\mathrm{Fe}}_{2}{\mathrm{WO}}_{6}$ of the iron (III) tungstate have been investigated by resistivity and electron paramagnetic resonance (EPR) measurements. The high-electrical resistivity for all phases complies with the dominant antiferromagnetic component of the compounds. The EPR spectra comprise a broad exchange narrowed EPR line due to ${\mathrm{Fe}}^{3+}$ ions. The broadening of the EPR linewidth is explained in terms of the critical spin fluctuations near the antiferromagnetic phase transition. The shift of the resonance field and the temperature dependence of the EPR intensity imply an extended region of short-range order correlations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|