Diffusion behavior of oxygen and dielectric properties in the hexagonl BaTiO3
| Autor: | Yu, Jianding, Natsui, Hidesada, Hashimoto, Satoshi, Itoh, Mitsuru, Odawara, Osamu, Yoda, Shinichi |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Condensed matter physics Annealing (metallurgy) Hexagonal crystal system chemistry.chemical_element Dielectric Condensed Matter Physics Thermal diffusivity Oxygen Oxygen vacancy Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Lattice (order) Barium titanate |
| Zdroj: | Ferroelectrics. 415(1):122-126 |
| ISSN: | 0015-0193 |
| Popis: | The oxygen diffusivity of hexagonal barium titanate by the tracer method and its dielectric constants have been evaluated. The oxygen diffusivity of hexagonal barium titanate does not show any direction dependency along [0001] and [1000] directions in lattice. Because of the face-shared position is more favorable position of oxygen vacancy than the corner-shared position. The dielectric constant along [1000] direction is larger than the [0001] direction. The difference of dielectric constant between both directions was gradually decreased with increasing the annealing temperature owing to reduction of the oxygen vacancies. |
| Databáze: | OpenAIRE |
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