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The Spectral and Magnetic Properties of Er<sup>3+</sup> and Yb<sup>3+</sup> Ions in Y<inf>2</inf>Ti<inf>2</inf>O<inf>7</inf> Crystals with a Pyrochlore Structure
Authors
Batulin R.
Cherosov M.
+10 more
Gil’mutdinov I.
Khaliulin B.
Kiiamov A.
Klekovkina V.
Malkin B.
Mukhamedshin I.
Mumdzhi I.
Nikitin S.
Rodionov A.
Yusupov R.
Publication date
1 January 2019
Publisher
Abstract
© 2019, Pleiades Publishing, Ltd. Abstract: Cubic Y2Ti2O7 single crystals doped with Er3+ or Yb3+ ions have been studied by the methods of electron spin resonance (ESR) and selective laser spectroscopy. ESR spectra exhibit signals from rare-earth ions that substitute for yttrium ions in sites with local trigonal symmetry. The g tensor components are determined. The results of optical investigations indicate that impurity centers of several types are formed; the sublevel energies of the ground and excited multiplets of these centers are found. Among the great variety of detected optical centers, the centers that dominate in the formation of ESR spectra are discriminated. An analysis of the experimental data using the exchange-charge model have made it possible to determine the sets of parameters of the crystal field for Er3+ and Yb3+ ions substituting Y3+ ions in regular crystallographic sites in pyrochlore Y2Ti2O7
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Kazan Federal University Digital Repository
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oai:dspace.kpfu.ru:net/155676
Last time updated on 20/02/2020
National Open Repository Aggregator (NORA)
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oai:rour.neicon.ru:rour/196940
Last time updated on 04/04/2020