Submillimeter wave ESR measurements of Yb2Cu2O5 powder sample have bee
n performed for the first time in the frequency region from 60 to 369.
8 GHz using a pulsed magnetic field up to 16 T. Complicated AFMR modes
have been observed at 1.8 K reflecting the complex magnetic structure
below T-N. They are discussed in connection with our previous submill
imeter wave ESR of Y2Cu2O5. (C) 1998 Elsevier Science B.V. All rights
reserved.