Open AccessШирокополосная ЭПР-спектроскопия ионов Мо-=SUP=-3+-=/SUP=- в иттрий-алюминиевом гранате
Author(s) -
Г.С. Шакуров,
Г.Р. Асатрян,
Л.В. Мингалиева,
А.Г. Петросян,
К.Л. Ованесян
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.10.46531.120
Subject(s) - impurity , electron paramagnetic resonance , cerium , microwave , yttrium iron garnet , spectral line , materials science , spectroscopy , yttrium , analytical chemistry (journal) , resonance (particle physics) , ion , absorption spectroscopy , field (mathematics) , absorption (acoustics) , atomic physics , nuclear magnetic resonance , chemistry , optics , physics , mathematics , organic chemistry , quantum mechanics , astronomy , chromatography , pure mathematics , metallurgy , composite material , oxide
The crystals of yttrium–aluminum garnet with an admixture of iron and cerium have been studied by the method of wideband EPR spectroscopy. Resonance absorption of microwave radiation in the frequency range 220–300 GHz was detected. Based on the experimental data set, it is concluded that the signals belong to the Mo^3+ ion, which is included in the crystals as an uncontrolled impurity. A straightforward method was used to measure the splitting in a zero field between the Kramers doublets |±1/2〉 and |±3/2〉 (261.6 ± 0.5 GHz). The calculated angular and frequency-field dependences of the EPR spectra are in good agreement with the experiment.