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dc.contributor.author | Aminov L. | |
dc.contributor.author | Abdulsabirov R. | |
dc.contributor.author | Gafurov M. | |
dc.contributor.author | Korableva S. | |
dc.contributor.author | Kurkin I. | |
dc.contributor.author | Kurzin S. | |
dc.contributor.author | Rakhmatullin R. | |
dc.contributor.author | Ziganshin A. | |
dc.date.accessioned | 2018-09-17T20:55:18Z | |
dc.date.available | 2018-09-17T20:55:18Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 0937-9347 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/134262 | |
dc.description.abstract | Electron paramagnetic resonance (EPR) spectra of impurity Yb3+ ions (about 0.1 at.%) in mixed crystals BaF2(1 - x) plus LaF 3(x;) have been investigated for different values of the concentration x at a frequency of about 9.5 GHz by both continuous-wave (CW) EPR and electron spin echo methods. A spectrum of trigonal symmetry with a complex hyperfine structure is observed in "pure" BaF2:Yb 3+ (x = 0). Upon admixture of small amounts of LaF3 (x = 0.001), additional EPR lines arise with intensities increasing with the increase of x up to 0.005. These lines are attributed to trigonal centers including two rare-earth ions and two compensating fluorine ions. A further increase of x results in a decrease of the total EPR spectrum intensity, and at x ≥ 0.05 the CW resonance becomes practically unobservable. This may be due to the formation of rare-earth ion clusters with paramagnetic Yb3+ ions occurring in domains with a disordered structure of surroundings resulting in very broad EPR lines, which cannot be registered by CW EPR. Indeed, very broad (not less than 1 kG) EPR lines were observed by the electron spin echo method for concentrations x ≥ 0.02. © Springer-Verlag 2005. | |
dc.relation.ispartofseries | Applied Magnetic Resonance | |
dc.title | EPR of Yb3+ ions in Ba1-xLaxF 2+x mixed crystals | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 1-2 | |
dc.relation.ispartofseries-volume | 28 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 41 | |
dc.source.id | SCOPUS09379347-2005-28-12-SID19044390324 |