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Antiferromagnetic Resonance Measurements of MgCu 2 O 3 in the Submillimeter Wave Region
Author(s) -
Ohta H.,
Hayashi M.,
Arai N.,
Nojiri H.,
Motokawa M.,
Kitamura N.,
Kimura S.
Publication year - 1999
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/(sici)1521-3951(199902)211:2<781::aid-pssb781>3.0.co;2-e
Subject(s) - antiferromagnetism , anisotropy , condensed matter physics , resonance (particle physics) , submillimeter wave , field (mathematics) , physics , nuclear magnetic resonance , materials science , optics , atomic physics , millimeter , mathematics , pure mathematics
Antiferromagnetic resonances (AFMR) of MgCu 2 O 3 powder have been observed in the frequency region from 80 to 383.3 GHz using pulsed magnetic fields of up to 15 T at 1.8 K, which is well below the Néel temperature T N = (95 ± 1) K. Reflecting its two‐dimensional character, easy‐plane type anisotropy was observed and the observed results were analyzed by the conventional two‐sublattice molecular field theory. Although the existence of Dzyaloshinsky‐Moriya interaction was suggested by the previous neutron measurements, we were not able to resolve it from our AFMR results.