Technology for thermostimulated diagnostics of anisotropy and optical axes of crystals
https://doi.org/10.17073/1609-3577-2020-2-99-108
Abstract
To implement the technology of thermally stimulated diagnostics of anisotropy and optical axes of crystals, the sample is thermostated at a temperature not exceeding the melting point, an electric field not exceeding the breakdown field is applied to the sample, polarization is produced for a time greater than the relaxation time at this temperature. After that, without disconnecting the electric field, cooling to the temperature of liquid nitrogen is performed, then the field is switched off, the sample is linearly heated to a temperature above the polarization temperature and the obtained thermally stimulated depolarization (TSD) spectra taken along and perpendicular to the optical axis of the sixth order C6 crystal are examined. When comparing the obtained spectra, the presence of anisotropy is determined, and the exact direction of the optical axes is determined by the magnitude and presence of the TSD maxima.
Keywords
Supporting agencies: This work was supported by the Russian Foundation for Basic Research 18-32-00656 mol_a (Study of the relationship between optical-luminescent and mechanical phenomena caused by reversible ionization of the Ce3+ activator in Lu2SiO5 : Ce3+ single crystals)
About the Authors
V. M. Timokhin
Admiral Ushakov State Maritime University,
Scientific and Technological Center of Unique Instrumentation of the Russian Academy of Sciences,
15 Butlerova Str., Moscow 117342
Russian Federation
Russian Federation
Viktor M. Timokhin: Cand. Sci. (Phys.-Math.), Assistant Professor, Professor of RAE
V. M. Garmash
National University of Science and Technology MISiS,
4 Leninsky Prospekt, Moscow 119049
Russian Federation
Russian Federation
Vladimir M. Garmash: Dr. Sci. (Eng.), Professor
V. A. Tedzhetov
Scientific and Technological Center of Unique Instrumentation of the Russian Academy of Sciences,
15 Butlerova Str., Moscow 117342
Russian Federation
Russian Federation
Valentin A. Tedzhetov: Leading Engineer-Programmer
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Review
For citations:
Timokhin V.M., Garmash V.M., Tedzhetov V.A. Technology for thermostimulated diagnostics of anisotropy and optical axes of crystals. Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering. 2020;23(2):99-108. (In Russ.) https://doi.org/10.17073/1609-3577-2020-2-99-108
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