Optical properties, defects, and composition of La 3 Ga 5.5 Ta 0.5 O 14  crystals

O. A. Buzanov; M. I. Voronova; E. V. Zabelina; A. P. Kozlova; N. S. Kozlova; E. A. Skryleva; D. A. Spassky; K. D. Shcherbachev

doi:10.1134/S0020168517050041

Optical properties, defects, and composition of La₃Ga_5.5Ta_0.5O₁₄ crystals

Authors: Buzanov O.A.¹, Voronova M.I.², Zabelina E.V.², Kozlova A.P.², Kozlova N.S.², Skryleva E.A.², Spassky D.A.²^,3, Shcherbachev K.D.²
Affiliations:
1. OAO Fomos-Materials
2. Moscow Institute of Steel and Alloys (National University of Science and Technology)
3. Skobeltsyn Institute of Nuclear Physics
Issue: Vol 53, No 5 (2017)
Pages: 502-509
Section: Article
URL: https://journals.rcsi.science/0020-1685/article/view/158220
DOI: https://doi.org/10.1134/S0020168517050041
ID: 158220

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Supplementary files
Statistics

Abstract

La₃Ga_5.5Ta_0.5O₁₄ crystals were grown in pure argon and in an argon + 2% oxygen atmosphere. The growth atmosphere significantly effects the elemental composition of the crystals, their color, and the genesis and intensity of absorption bands in the ultraviolet, visible, and infrared spectral regions. Two types of defects were identified in the crystals: planar interstitial defects and nearly spherical vacancy-type defects.

Keywords

langatate, growth atmosphere, transmission spectra, defects, absorption bands, composition, structure, diffuse X-ray scattering, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, anisotropy

About the authors