Electron Paramagnetic Resonance of Cu2+ in KHCO3 Single Crystals

Abstract

The electron paramagnetic resonance spectra of Cu2+ doped KHC0<inf>3</inf>single crystals were studied at room temperature. The results indicate a substitutional entrance of the Cu2+ions in place of the magnetically inequivalent K+sites. The charge compensation is supposed to be fulfilled by proton vacancies. The hyperfine lines were well resolved and the 65Cu hyperfine coupling tensors were also found. The ground state of Cu2+indicates the dominance of the d<inf>x2_y2</inf>orbital and, therefore, elongation of the polyhedron, similar to a lengthened octahedron. © 1999, Verlag der Zeitschrift für Naturforschung. All rights reserved.