| Автор | R K Singhal |
| Автор | N L Saini |
| Автор | K B Garg |
| Автор | J Kanski |
| Автор | L Ilver |
| Автор | P O Nilsson |
| Автор | R Kumar |
| Автор | L C Gupta |
| Дата выпуска | 1993-06-14 |
| dc.description | Ce intermetallics CeAlNi, CeAlCu and CeNi<sub>2</sub>Si<sub>2</sub> have been studied by core-level photoemission spectroscopy to investigate their electronic structure. The Ce 3d XPS data clearly indicate that the final state is a quantum mechanical admixture of 4f<sup>0</sup>, 4f<sup>1</sup> and 4f<sup>2</sup> configurations in these systems with an increasing 4f<sup>0</sup> contribution as Cu is replaced by Ni. The two Ni-based systems are found to be mixed-valence systems with n<sub>f</sub><1 while the ground state of the Cu-containing system appears to retain a purely trivalent character with n<sub>f</sub> approximately=1. These results are in agreement with the authors earlier reported X-ray absorption and resonant photoemission data. The present study highlights the fact that the replacing of Ni by Cu seems to be propitious for driving the Ce from an intermediate-valence (IV) to a non-IV ground state. The results Ce 3d and Ce 4d XPS are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Study of some Ce intermetallics by core-level photoemission |
| Тип | paper |
| DOI | 10.1088/0953-8984/5/24/002 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 5 |
| Первая страница | 4013 |
| Последняя страница | 4020 |
| Аффилиация | R K Singhal; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | N L Saini; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | K B Garg; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | J Kanski; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | L Ilver; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | P O Nilsson; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | R Kumar; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Аффилиация | L C Gupta; Dept. of Phys., Rajasthan Univ., Jaipur, India |
| Выпуск | 24 |
