Crystallography Reports

, Volume 60, Issue 1, pp 34–36 | Cite as

Study of the structure of synthetic opals affected by temperature and pressure

  • V. A. Somenkov
  • S. S. Agafonov
  • V. P. Glazkov
  • E. S. Kovalenko
  • M. N. Shushunov
Structure of Inorganic Compounds

Abstract

It is demonstrated that synthetic opals, like most natural ones, have a cristobalite rather than quartz basis, change their color from white to blue after losing their water-containing component, and form superlattices. Being affected by temperature and pressure, they undergo partial or complete crystallization to the corresponding polymorphic modifications.

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References

  1. 1.
    J. V. Sanders, Nature 204, 1151 (1964).ADSCrossRefGoogle Scholar
  2. 2.
    R. Brückner, Encycl. Appl. Phys. 18, 95 (1997).Google Scholar
  3. 3.
    RF Patent no. 2051864.Google Scholar
  4. 4.
    I. V. Naumov, S. A. Petushkov, K. M. Podurets, et al., Triaxial Neutron Spectrometer on Ideal Crystals STOIK, Preprint of IAE, Moscow, 1986, no. 4368/4, p. 25.Google Scholar
  5. 5.
    V. P. Glazkov, I. V. Naumov, and S. Sh. Shilshtein, Nucl. Instrum. Methods Phys. Res., Sect. A 264, 369 (1988).ADSCrossRefGoogle Scholar
  6. 6.
    I. N. Goncharenko and V. P. Glazkov, Fiz. Tekh. Vys. Davlenii 2, 56 (1991).Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2015

Authors and Affiliations

  • V. A. Somenkov
    • 1
  • S. S. Agafonov
    • 1
  • V. P. Glazkov
    • 1
  • E. S. Kovalenko
    • 1
  • M. N. Shushunov
    • 1
  1. 1.National Research Centre “Kurchatov Institute”MoscowRussia

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