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Electron spin resonance of Cr5+ in CaWO4

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Abstract

Electron Spin Resonance of CaWO4 with 0·1% of Cr has been investigated at liquid nitrogen and liquid helium temperatures. The observed ESR spectrum is attributed to Cr5+ ion in the substitutional site of W which has a compressed tetrahedral surroundings. A simple point charge calculation based on this geometry explains the observedg anisotropy and hyperfine anisotropy and places the magnetic electron in a predominantly\(3d_{z^2 } \) orbital. A comparison of these results with those obtained on other isoelectronic systems in similar and different co-ordinations justifies our assignment.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay-5

    K. V. Lingam, P. G. Nair & B. Venkataraman

Authors
  1. K. V. Lingam
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  2. P. G. Nair
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  3. B. Venkataraman
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Additional information

Communicated by Prof. B. V. Thosar,f.a.sc.

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Lingam, K.V., Nair, P.G. & Venkataraman, B. Electron spin resonance of Cr5+ in CaWO4 . Proc. Indian Acad. Sci. 70, 29–41 (1969). https://doi.org/10.1007/BF03046933

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  • DOI: https://doi.org/10.1007/BF03046933

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