Observation of exchange-induced orthogonal state of magnetic impurity
Balbashov A. M. , Berezin A. G., Bobryshev Yu. V. , Marchukov P. Yu. , Nikolaev I.V., Rudashevskii E. G.
An impurity mode whose frequency has an unusual dependence on the magnetic field has been observed experimentally in a study of antiferromagnetic resonance in YFe03 at 12 ë in magnetic fields up to 120 kOe in the wavelength interval 4-0.75 mm. This unusual magnetic field dependence is a consequence of the orthogonal state of the impurity, whose magnetic moment is oriented strictly antiparallel to the ferromagnetism vector.