dc.contributor.author |
Aminov L. |
|
dc.contributor.author |
Kurkin N. |
|
dc.contributor.author |
Kurzin S. |
|
dc.contributor.author |
Lukoyanov D. |
|
dc.contributor.author |
Salikhov I. |
|
dc.contributor.author |
Rakhmatullin R. |
|
dc.date.accessioned |
2018-09-17T21:11:49Z |
|
dc.date.available |
2018-09-17T21:11:49Z |
|
dc.date.issued |
1997 |
|
dc.identifier.issn |
1063-7761 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/134656 |
|
dc.description.abstract |
Our studies involve measuring spin-lattice relaxation times for Nd3+ ions in yttrium-aluminum garnets over the temperature range 4-50 K at 9.25 and 36.4 GHz for different orientations of the external magnetic field in relation to the crystallographic axes. The temperature dependence of the relaxation rate is described by T1 -1=ATn + b exp(-ΔAT), where n varies from sample to sample, with n=1 for "perfect" samples (i.e., with the longest relaxation times). Here A is approximately 130 cm-1, which is the energy of the excited Kramers doublet of the neodymium ion closest to the ground state, and this makes it possible to interpret the second term in T1 -1 as the contribution of two-stage relaxation proceeding through the intermediate level Δ. A strong field dependence of these processes has been discovered: when the frequency was increased fourfold, the relaxation rate increased by a factor of 10. The effect is a specific manifestation of the degeneracy of the excited level, breaking of the symmetry of the crystalline field due to lattice defects, and the prevalence of deformations of a certain type in the spin-lattice interaction. ©1997 American Institute of Physics. |
|
dc.relation.ispartofseries |
Journal of Experimental and Theoretical Physics |
|
dc.title |
Field dependence of spin-lattice relaxation of Nd3+ ions in y3Al5O12 crystals |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
1 |
|
dc.relation.ispartofseries-volume |
84 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
183 |
|
dc.source.id |
SCOPUS10637761-1997-84-1-SID33751297603 |
|