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Polar-center phase nuclei in He+-irradiated CuO single crystals

  • Semiconductors and Insulators
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Abstract

Irradiation of various single-crystal CuO faces [ac,bc,(110)] with 4.6-MeV He+ ions has been found to result in reduction of CuO to Cu2O and Cu on the irradiated and unirradiated sides, lifting of forbiddenness from optical transitions in the [CuO4]7− electron center in the 0.7–0.95-eV energy range, a change in dichroism near the bands corresponding to transitions in the hole centers, [CuO4]5−, and electron centers, [CuO4]7−, as well as in a resonant increase of absorption at 0.95–1.30 eV with an unusual polarization dependence. The results of He+ irradiation of CuO single crystals are discussed in terms of a model of the nucleation of the phase of polar (electron and hole) centers in copper-oxygen systems.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Branch of the Academy of Sciences, 620219, Ekaterinburg, Russia

    N. N. Loshkareva, Yu. P. Sukhorukov, B. A. Gizhevskii, S. V. Naumov & A. A. Samokhvalov

  2. Ural State University, 620083, Ekaterinburg, Russia

    A. S. Moskvin

  3. Ural State Technical University, 620002, Ekaterinburg, Russia

    T. A. Belykh

Authors
  1. N. N. Loshkareva
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  2. Yu. P. Sukhorukov
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  3. B. A. Gizhevskii
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  4. S. V. Naumov
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  5. A. A. Samokhvalov
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  6. A. S. Moskvin
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  7. T. A. Belykh
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Additional information

Fiz. Tverd. Tela (St. Petersburg) 40, 419–424 (March 1998)

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Loshkareva, N.N., Sukhorukov, Y.P., Gizhevskii, B.A. et al. Polar-center phase nuclei in He+-irradiated CuO single crystals. Phys. Solid State 40, 383–388 (1998). https://doi.org/10.1134/1.1130329

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  • DOI: https://doi.org/10.1134/1.1130329

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