| Автор | M D Glinchuk |
| Автор | V V Laguta |
| Автор | I P Bykov |
| Автор | J Rosa |
| Автор | L Jastrabik |
| Дата выпуска | 1995-03-27 |
| dc.description | The ESR investigation of nominally pure KTaO<sub>3</sub> was carried out at 4.2 K<T<77 K. Two ESR spectra were observed for the first time. The first spectrum with cubic symmetry was shown to be that of Gd<sup>3+</sup> substituted for K<sup>+</sup>. The analysis of the spectrum line intensities and widths gave no evidence about the quasi-static displacements of tantalum ions in the lattice assumed earlier. The second spectrum had axial symmetry and its source was identified as a new off-centre impurity ion Fe<sup>+</sup> substituted for K<sup>+</sup> in KTaO<sub>3</sub>. The surrounding oxygen ion displacements were shown to be the main reason for the Fe<sup>+</sup> ESR spectra axiality. The estimation of these displacements Delta x was carried out in the framework of crystalline-field theory and appeared to be about 0.2 AA. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Impurities in nominally pure KTaO<sub>3</sub>: evidence from electron spin resonance |
| Тип | paper |
| DOI | 10.1088/0953-8984/7/13/010 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 7 |
| Первая страница | 2605 |
| Последняя страница | 2614 |
| Аффилиация | M D Glinchuk; Inst. of Problems in Mater. Sci., Acad. of Sci., Kiev, Ukraine |
| Аффилиация | V V Laguta; Inst. of Problems in Mater. Sci., Acad. of Sci., Kiev, Ukraine |
| Аффилиация | I P Bykov; Inst. of Problems in Mater. Sci., Acad. of Sci., Kiev, Ukraine |
| Аффилиация | J Rosa; Inst. of Problems in Mater. Sci., Acad. of Sci., Kiev, Ukraine |
| Аффилиация | L Jastrabik; Inst. of Problems in Mater. Sci., Acad. of Sci., Kiev, Ukraine |
| Выпуск | 13 |
