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HYDROTHERMAL SYNTHESIS AND OPTICAL PROPERTIES OF CALCITE SINGLE CRYSTALS

I. V. Nefyodova1, N. I. Leonyuk2,* , I. A. Kamenskikh3

Affiliation

  1. All-Russian Research Institute for Synthesis of Minerals (VNIISIMS), Alexandrov 601650, Vladimir District, Russia
  2. Moscow State University, Geological Faculty, 119992/GSP-2 Moscow, Russia
  3. Moscow State University, Synchrotron Radiation Laboratory, 119992/GSP-2 Moscow, Russia

Abstract

Calcite crystals, CaCO3, have been grown under hydrothermal conditions in the CaCO3 NH4Br-LiCl-H2O system doped with the In3+ impurity. As a result, this growth conditions allowed to grow the optical grade of this materials with variable indium impurity from 0.03 to 0.5 at %. Optical and luminescent characteristics of the crystals grown have also been studied. Analysis of reflectivity measurements at different crystal orientations revealed that the onset of strong absorption (‡ 105 cm-1) in CaCO3 falls into the region ~ 7–8 eV..

Keywords

Hydrothermal synthesis, Single crystals, Optical calcite.

Submitted at: July 1, 2003
Accepted at: July 31, 2003

Citation

I. V. Nefyodova, N. I. Leonyuk, I. A. Kamenskikh, HYDROTHERMAL SYNTHESIS AND OPTICAL PROPERTIES OF CALCITE SINGLE CRYSTALS, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 3, pp. 609-613 (2003)