Waplak, S.Schmidt, V. HugoDrumheller, John E.2015-04-082015-04-081986-11S. Waplak, V.H. Schmidt, and J.E. Drumheller. "EPR determination of three-dimensional correlations below the ferroelectric phase transition in pseudo-one-dimensional CsH2PO4:Cu2+,â€� Phys. Rev. B 34, 6532-6533 (1986)1098-0121https://scholarworks.montana.edu/handle/1/8959The polarization fluctuations of ferroelectric CsH2PO4 above Tc are generally classified as a quasi-one-dimensional phenomenon. The temperature dependence of the EPR line splitting of the S=1 state of the Cu2+ tetramer, however, exhibits a critical exponent below Tc of β=0.5 indicating that the correlations associated with the order parameter are three dimensional below Tc.Low temperature physicsPhysicsMaterials scienceElectromagneticsArticle