Temperature-dependence of the hyperfine interaction in the cubic phase of BaHfO₃
The temperature dependence of the hyperfine interaction in the paraelectric phase of BaHfO₃ in the temperature range from liquid-nitrogen temperature to 1350 K has been studied. The experimental results show an Abragam-Pound mechanism for the attenuation of the angular correlation. In this cubic str...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1991 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/60217 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/60217 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 Physics Condensed matter Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Sumario: | The temperature dependence of the hyperfine interaction in the paraelectric phase of BaHfO₃ in the temperature range from liquid-nitrogen temperature to 1350 K has been studied. The experimental results show an Abragam-Pound mechanism for the attenuation of the angular correlation. In this cubic structure the attenuation would be consistent with a relaxation mechanism that involves O-ion hopping between vacant sites in the lattice. Using the point-charge model for the estimation of the electric field gradient produced by an O vacancy in the coordination sphere of the probe ion, the process is characterized by a correlation time τ_(c) = 12 ± 1 ps at RT. |
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