Open AccessШирокополосная ЭПР-спектроскопия кристалла SrY-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-:Ho-=SUP=-3+-=/SUP=-
Author(s) -
Г.С. Шакуров,
Б.З. Малкин,
Р.Г. Батулин,
А.Г. Киямов
Publication year - 2022
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2022.01.51886.24-21
Subject(s) - hyperfine structure , multiplet , ion , inelastic neutron scattering , atomic physics , excited state , spectral line , ground state , crystal field theory , electron paramagnetic resonance , impurity , chemistry , crystal (programming language) , physics , scattering , crystallography , inelastic scattering , nuclear magnetic resonance , astronomy , computer science , optics , programming language , organic chemistry
EPR spectra of impurity Ho3+ ions in oriented SrY2O4 single-crystals are registered at the temperature 4.2 K in the frequency range from 70 to 180 GHz. The results of measurements evidence for the substitution of Ho3+ ions for the Y3+ ions at the structurally nonequivalent sites R1 and R2 with the local Cs point symmetry. The values of g-factors, hyperfine structure constants and the energy gaps berween the ground and the first excited non-degenherate crystal-field sublevels of the ground 5I8 multiplet are determined. The observed specific features of the ground states of Но3+ ions (non-Kramers doublets with the zero-field splittings of 4.30 and 1.67 cm-1) open a possibility to identify transitions in optical spectra of SrY2O4:Ho and inelastic neutron scattering spectra of SrHo2O4 crystals.