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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 |