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EPR linewidth studies of Gd 3+ ‐doped La x Ce 1− x F 3 single crystals
Author(s) -
Korczak W.,
Paradowski M.,
Subotowicz M.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221150110
Subject(s) - electron paramagnetic resonance , laser linewidth , ion , diamagnetism , lanthanum , doping , crystallography , condensed matter physics , analytical chemistry (journal) , chemistry , nuclear magnetic resonance , materials science , physics , magnetic field , inorganic chemistry , laser , optics , organic chemistry , quantum mechanics , chromatography
EPR linewidths of Gd 3+ ions (0.1%) in La x Ce 1− x F 3 single crystals at the frequency 9.4 GHz and temperatures of 77 to 297 K are investigated for H ∥ z . The generalized theory of the magnetic resonance by Kubo and Tomita and Mitsuma's mechanism of spin‐lattice modulated narrowing are adapted to explain the temperature dependence of the EPR linewidths of the Gd 3+ ions at the Kramers host Ce 3+ ions (4f 1 , 2 F 5/2 ) in La x Ce 1− x F 3 single crystals for x ⩽ 0.2. The spin‐lattice narrowing is not observed for x > 0.2. EPR linewidth of Gd 3+ does not depend on the temperature for x > 0.2. Peak‐to‐peak linewidth Δ H pp increases with the decreasing amount of diamagnetic lanthanum ions in La x Ce 1− x F 3 single crystals for 0.6 ⩽ x ⩽ 1.