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Antiferromagnetic resonance in NIO:Co 2+ and NIO:Fe 2+
Author(s) -
Ph. Lau C. R. Becker,
Geick R.,
Wagner V.
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.2220670228
Subject(s) - non blocking i/o , antiferromagnetism , resonance (particle physics) , ion , anisotropy , doping , materials science , analytical chemistry (journal) , nuclear magnetic resonance , chemistry , crystallography , inorganic chemistry , condensed matter physics , atomic physics , physics , optics , biochemistry , organic chemistry , chromatography , catalysis , optoelectronics
The antiferromagnetic resonance (AFMR) in NiO doped with either Fe 2+ or Co 2+ was studied at liquid helium temperatures in the far infrared. A strong frequency shift of the AFMR line was observed in Co 2+ ‐doped crystals. In the case of the Fe 2+ ‐doped crystals, this shift was much smaller. In addition, a second absorption line was found at larger Co 2+ concentrations (5% to 7%), the nature of which has not yet definitely been established. A simple model calculation which primarily employs the single ion anisotropies of the Co 2+ and Fe 2 + ions was performed for a qualitative interpretation of the experimental results.