| Автор | G J Bowden |
| Автор | V H McCann |
| Дата выпуска | 1986-11-01 |
| dc.description | The problem of Knight shifts in samarium intermetallic compounds is investigated using a density matrix perturbational approach, which takes into account the strong admixing between the J=<sup>5</sup>/<sub>2</sub> and <sup>7</sup>/<sub>2</sub> levels of the Sm<sup>3+</sup> ion. Particular attention is paid to the effects of crystal fields on the White-Van Vleck crossover temperature T<sub>CO</sub>, and explicit expressions are given for the shifts in T<sub>CO</sub>, induced by hexagonal and cubic crystal fields, correct to (B<sub>n</sub><sup>m</sup>/kT)<sup>2</sup>. It is shown that whereas quadratic crystal fields can either raise of lower T<sub>CO</sub>, depending on the direction of the applied field B, cubic crystal fields always act so as to lower the White-Van Vleck crossover temperature. In addition, a method is suggested for the determination of both the bare conduction electron Knight shift parameter K<sub>0</sub> and the crystal-field coefficient B<sub>20</sub> in hexagonal compounds, which does not involve additional measurements on isostructural compounds containing lanthanum. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | On the Knight shift in samarium intermetallic compounds |
| Тип | paper |
| DOI | 10.1088/0305-4608/16/11/021 |
| Print ISSN | 0305-4608 |
| Журнал | Journal of Physics F: Metal Physics |
| Том | 16 |
| Первая страница | 1855 |
| Последняя страница | 1872 |
| Аффилиация | G J Bowden; Sch. of Phys., New South Wales Univ., Kensington, NSW, Australia |
| Аффилиация | V H McCann; Sch. of Phys., New South Wales Univ., Kensington, NSW, Australia |
| Выпуск | 11 |
