Title: ESR INVESTIGATIONS OF INCOMMENSURATE Rb_{2}ZnCl_{4}:Mn^{2+}
Author(s): M.P.Trubitsyn (Dnipropetrovsk State University, Department of Physics, 13 Naukovyi Lane, 320625 Dnipropetrovsk, Ukraine)

ESR spectra of Mn$^{2+}$ probe have been studied in incommensurate rubidium zinc chloride monocrystals. It has been shown that temperature dependence of the resonance fields of ESR fine transition $ M_{S}$=3/2$\ss $5/2 can be satisfactorily described based on the simple ``local'' model. ESR line position data confirm non-classical character of the Rb$_2$ZnCl$_4$ critical properties, corresponding to 3D XY Heizenberg model.

Comments: Figs. 2, Refs. 13, Tabs. 0.