ESR spectroscopy research of superconductive signs in glasses enriched with Fe or Ni ions

Anatoly I. Veinger; Andrej G. Zabrodskii; Tatjana V. Tisnek; Kirill O. Shchavelev; Oleg S. Shchavelev

doi:10.1117/12.241806

10 June 1996 ESR spectroscopy research of superconductive signs in glasses enriched with Fe or Ni ions

Anatoly I. Veinger, Andrej G. Zabrodskii, Tatjana V. Tisnek, Kirill O. Shchavelev, Oleg S. Shchavelev

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241806
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Magnetosensitive microwave absorption has been studied in oxide glasses enriched with iron or nickel ions. Conditions have been found under which magnetosensitive microwave absorption has the superconducting form, namely, it increases with field in weak magnetic fields, with the derivative of absorption with respect to magnetic field being at a maximum at fields of the order of 100 Oe. For glasses enriched with Fe ions, these conditions are the following: reduction of Fe3+ ions to Fe2+ and presence of Mg ions in the glass. For glasses enriched with Ni ions, the primary condition is formation in these glasses of tetrahedral structural complexes [Ni04]. In our opinion, such an absorption is due to the presence in these glasses of small-sized superconducting inclusions. Ways of increasing the concentration of these inclusions are discussed.

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Anatoly I. Veinger, Andrej G. Zabrodskii, Tatjana V. Tisnek, Kirill O. Shchavelev, and Oleg S. Shchavelev "ESR spectroscopy research of superconductive signs in glasses enriched with Fe or Ni ions", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241806

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