Optical spectroscopy and unusual temperature shift of f - f zero-phonon luminescence lines: KTaO.sub.3./sub.:Er

Trepakov, V. A.; Skvortsov, A. P.; Potůček, Zdeněk; Bryknar, Z.; Nuzhnyy, Dmitry; Laguta, Valentyn; Kuznetsov, V.G.; Gavrikov, A.A.; Dejneka, Alexandr

doi:https://dx.doi.org/10.1080/00150193.2022.2041938

Number of the records: 1

Optical spectroscopy and unusual temperature shift of f - f zero-phonon luminescence lines: KTaO.sub.3./sub.:Er

1.

SYSNO ASEP	0558820
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Optical spectroscopy and unusual temperature shift of f - f zero-phonon luminescence lines: KTaO₃:Er
Author(s)	Trepakov, V. A. (RU) Skvortsov, A. P. (RU) Potůček, Zdeněk (FZU-D)_{RID, ORCID} Bryknar, Z. (CZ) Nuzhnyy, Dmitry (FZU-D)_{RID, ORCID} Laguta, Valentyn (FZU-D)_{RID, ORCID} Kuznetsov, V.G. (RU) Gavrikov, A.A. (RU) Dejneka, Alexandr (FZU-D)_{RID, ORCID}
Number of authors	9
Source Title	Ferroelectrics. - : Taylor & Francis - ISSN 0015-0193 Roč. 591, č. 1 (2022), s. 191-200
Number of pages	10 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	ABO₃ ; incipient ferroelectrics ; rare-earth impurities ; zero-phonon emission lines
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000816746500025
EID SCOPUS	85133221026
DOI	10.1080/00150193.2022.2041938
Annotation	We present a study of KTaO3:Er (~0.05%) single crystals based on a multifaceted approach including the use of optical absorption, far-infrared reflectivity, electron paramagnetic resonance, photoluminescence spectra, and ab initio simulations. We describe briefly the fundamental consequences of Er doping, in particular, stiffening of TO1 soft mode of KTaO3. We provide information about energy level structures controlling f – f optical transitions in Er3+, on formation of minor cubic octahedral and major orthorhombic Er3+ centers. It is revealed that the temperature shift of narrow zero-phonon emission lines is strikingly unusual being much larger than that typical for trivalent rare-earth impurities.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2023
Electronic address	https://doi.org/10.1080/00150193.2022.2041938

Number of the records: 1