Electron paramagnetic resonance of Cu2+ doped Na2HAsO4·7H2O single crystals

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Köksal F., Kartal I., Gençten A.

Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, vol.53, no.9, pp.779-782, 1998 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 53 Issue: 9
• Publication Date: 1998
• Doi Number: 10.1515/zna-1998-0908
• Journal Name: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.779-782
• Keywords: Cu2+, EPR, Sodium Hydrogen Arsenate
• Ondokuz Mayıs University Affiliated: Yes

Abstract

The electron paramagnetic resonance spectra of Cu2+ doped Na2HAsO4·TH2O single crystals were studied at room temperature. The results indicate the substitutional entrance of Cu2+ in two magnetically inequivalent Na+ sites. Charge compensation is supposed to be fulfilled by proton vacancies. The spin Hamiltonian parameters were determined. The ground state for Cu2+ seems to indicate the dominance of the dz2 orbital and therefore a compression of the distorted octahedron along its C4v axis.