dc.contributor.author |
Malkin B. |
|
dc.contributor.author |
Vanyunin M. |
|
dc.contributor.author |
Barbara B. |
|
dc.contributor.author |
Bertaina S. |
|
dc.date.accessioned |
2018-09-18T20:10:24Z |
|
dc.date.available |
2018-09-18T20:10:24Z |
|
dc.date.issued |
2008 |
|
dc.identifier.issn |
0925-8388 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/137248 |
|
dc.description.abstract |
Theory of magnetization relaxation in a diluted paramagnet based on calculations of relaxation rates due to electron-phonon coupling and magnetic dipole-dipole interactions is developed. Assuming fast establishment of equilibrium in the spin system and the Gaussian line shape for the spectral density of the dipole-dipole reservoir, we have derived a master equation for a paramagnetic ion. The developed approach is used to interpret dynamic magnetic measurements in LiYF4:Ho3+ single crystals. We show specific variations of low temperature magnetization dynamics at the magnetic field values corresponding to (anti-)crossings of electron-nuclear sublevels of the Ho3+ ground state. The measured dependences of the ac-susceptibility on frequency, holmium concentration and the applied magnetic field are described when taking into account the phonon bottleneck effect and the cross-relaxation. Evolution of the magnetization of the LiYF4:Ho3+ in the reversed field is considered. © 2007 Elsevier B.V. All rights reserved. |
|
dc.relation.ispartofseries |
Journal of Alloys and Compounds |
|
dc.subject |
Electron-phonon interactions |
|
dc.subject |
Rare earth alloys and compounds |
|
dc.subject |
Spin dynamics |
|
dc.title |
Relaxation rates of magnetization in LiYF4:Ho3+ crystals |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
1-2 |
|
dc.relation.ispartofseries-volume |
451 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
473 |
|
dc.source.id |
SCOPUS09258388-2008-451-12-SID38349083438 |
|