S. Kimura et al., SUBMILLIMETER-WAVE ELECTRON-SPIN-RESONANCE MEASUREMENTS FOR SINGLE-CRYSTAL Y2CU2O5, Journal of physics. Condensed matter, 8(29), 1996, pp. 5461-5473
Submillimetre-wave ESR measurements for Y2Cu2O5 Single crystal have be
en performed for the first time in the frequency region from 60 to 383
GHz using a pulsed magnetic field up to 16 T. AFMR modes below T-N =
13 K have been analysed by a model proposed previously, which is essen
tially the molecular-field theory with the assumption of an S = 1 dime
r of two Cu2+ spins. The anisotropies of the system are determined by
the analysis, and they are discussed together with the results of our
magnetization measurements.