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An electron paramagnetic resonance study of Fe 3+ ions doped in langbeinites
Author(s) -
Böttjer T.,
Stockhausen M.
Publication year - 1992
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.2221740206
Subject(s) - electron paramagnetic resonance , ion , doping , vacancy defect , ionic bonding , manganese , relaxation (psychology) , center (category theory) , crystallography , crystal (programming language) , spectral line , ionic radius , materials science , paramagnetism , chemistry , nuclear magnetic resonance , condensed matter physics , physics , social psychology , psychology , organic chemistry , astronomy , computer science , programming language , metallurgy
Powder and single crystal X‐band EPR spectra are measured of the cubic (high temperature) phase of eleven langbeinites, A 2 + B 2 2+(SO 4 ) 3 , doped with Fe 3+ . One center of axial symmetry is observed, the ZFS parameter B 2 0of which is discussed in comparison with corresponding results on manganese‐doped langbeinites. Very probably Fe 3+ forms a substitutional center in the more spacious of the two non‐equivalent B sites, which leads to local relaxation depending on ionic radii. Charge compensation by an A site vacancy is likely.