Please use this identifier to cite or link to this item: http://elar.urfu.ru/handle/10995/111760
Title: As-Grown Domain Structure in Calcium Orthovanadate Crystals
Authors: Shishkina, E.
Yuzhakov, V.
Nebogatikov, M.
Pelegova, E.
Linker, E.
Ivleva, L.
Shur, V.
Issue Date: 2021
Publisher: MDPI
MDPI AG
Citation: As-Grown Domain Structure in Calcium Orthovanadate Crystals / E. Shishkina, V. Yuzhakov, M. Nebogatikov et al. // Crystals. — 2021. — Vol. 11. — Iss. 12. — 1508.
Abstract: An as-grown domain structure in nominally pure and Mn-doped calcium orthovanadate (CVO) crystals was studied by several methods of domain imaging: optical microscopy, piezoelectric force microscopy, and Cherenkov-type second harmonic generation. The combination of imaging methods provided an opportunity for comprehensive study of the domain structure on the polar surface and in the bulk of the samples. It was shown that, in nominally pure CVO crystals, an irregular 3D maze of rounded domains, with charged walls, essentially tilted from the polar direction, was present. It was proposed that the domain structure was formed just below the phase transition temperature and persisted during subsequent cooling. Such behavior is due to effective bulk screening of the depolarization field and a low value of the pyroelectric field which appears during cooling. The revealed formation of triangular domains and flat fragments of domain walls in Mn-doped CVO was attributed to polarization reversal under the action of the polar component of the pyroelectric field, above the threshold value for domain switching. This fact represents the first observation of the domain switching in CVO crystals. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: CHARGED DOMAIN WALLS
DOMAIN IMAGING
DOMAIN STRUCTURE
PYROELECTRIC FIELD
SECOND HARMONIC GENERATION
URI: http://elar.urfu.ru/handle/10995/111760
Access: info:eu-repo/semantics/openAccess
RSCI ID: 47549269
SCOPUS ID: 85121607156
WOS ID: 000777814300001
PURE ID: 29211637
ISSN: 2073-4352
DOI: 10.3390/cryst11121508
metadata.dc.description.sponsorship: Funding: This research was funded by the Russian Foundation for Basic Research, grant number 20-02-00588-a, and the Ministry of Science and Higher Education of the Russian Federation, grant numbers 075-15-2021-677 and FEUZ-2020-0054.
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