| Автор | A Varez |
| Автор | C Leon |
| Автор | J Santamaria |
| Автор | J M Rojo |
| Автор | J Sanz |
| Автор | E Moran |
| Автор | F Sanchez-Quesada |
| Автор | M A Alario-Franco |
| Дата выпуска | 1995-07-10 |
| dc.description | High-T<sub>c</sub> superconducting YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> ceramic samples are lithiated by the reaction with n-butyllithium. For lithium nominal contents less than unity per formula the presence of '123' and '124' phases are deduced from X-ray diffraction and high-resolution electron microscopy experiments. NMR and impedance spectroscopy techniques have been conducted in a sample with a nominal Li content of 0.9 per formula. Spin-lattice relaxation times and electrical conductivity relaxation (ECR) are measured as a function of temperature. NMR and ECR data are interpreted in terms of a stretched exponential decay function in the time domain. Microscopic activation energies for lithium motion of 0.49 eV (NMR measurements) and of 0.41 eV (ECR) are deduced for short range motion. Activation energies for long range motion of 0.98 eV (NMR) and 1.03 eV (ECR) are also deduced. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Ionic conductivity of chemically lithiated YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>: NMR and impedance spectroscopic studies |
| Тип | paper |
| DOI | 10.1088/0953-8984/7/28/006 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 7 |
| Первая страница | 5477 |
| Последняя страница | 5489 |
| Аффилиация | A Varez; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | C Leon; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | J Santamaria; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | J M Rojo; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | J Sanz; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | E Moran; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | F Sanchez-Quesada; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Аффилиация | M A Alario-Franco; Dept. de Ingeneria, Univ. Carlos III de Madrid, Leganes, Spain |
| Выпуск | 28 |
