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EPR of Gd ions in Jahn‐Teller‐distorted rare‐earth crystals TbAsO 4 , TmAsO 4 , and TmVO 4
Author(s) -
Schwab G.
Publication year - 1975
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.2220680135
Subject(s) - electron paramagnetic resonance , jahn–teller effect , ion , condensed matter physics , doping , materials science , rare earth , spectral line , hamiltonian (control theory) , chemistry , crystallography , nuclear magnetic resonance , physics , mathematics , organic chemistry , astronomy , mathematical optimization , metallurgy
EPR measurements on TbAsO 4 , TmAsO 4 , and TmVO 4 doped with 1 to 2% Gd ions were carried out at temperatures below T D , the critical temperature for the Jahn‐Teller phase transition. A spin‐Hamiltonian allowing for lower symmetry and magnetic interaction is fitted to the spectra of the Gd ions. Low symmetry parameters B 2 2are determined. The parameters of the magnetic interaction for Gd ions in the Tb and Tm host crystals are extremly different.