Research output: Contribution to journal › Article › peer-review
Optical spectroscopy and unusual temperature shift of f–f zero-phonon luminescence lines: KTaO3:Er : KTaO3:Er. / Trepakov, V. A.; Skvortsov, A. P.; Potucek, Z.; Bryknar, Z.; Nuzhnyy, D.; Laguta, V.; Kuznetsov, V. G.; Gavrikov, A. A.; Dejneka, A.
In: Ferroelectrics, Vol. 591, No. 1, 26.06.2022, p. 191-200.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Optical spectroscopy and unusual temperature shift of f–f zero-phonon luminescence lines: KTaO3:Er
T2 - KTaO3:Er
AU - Trepakov, V. A.
AU - Skvortsov, A. P.
AU - Potucek, Z.
AU - Bryknar, Z.
AU - Nuzhnyy, D.
AU - Laguta, V.
AU - Kuznetsov, V. G.
AU - Gavrikov, A. A.
AU - Dejneka, A.
N1 - Publisher Copyright: © 2022 Taylor & Francis Group, LLC.
PY - 2022/6/26
Y1 - 2022/6/26
N2 - 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.
AB - 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.
KW - ABO incipient ferroelectrics
KW - rare-earth impurities
KW - zero-phonon emission lines
KW - ABO3 incipient ferroelectrics
UR - http://www.scopus.com/inward/record.url?scp=85133221026&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/c246b3ac-6354-31c9-bdaf-4785e40c3dcb/
U2 - 10.1080/00150193.2022.2041938
DO - 10.1080/00150193.2022.2041938
M3 - Article
AN - SCOPUS:85133221026
VL - 591
SP - 191
EP - 200
JO - Ferroelectrics
JF - Ferroelectrics
SN - 0015-0193
IS - 1
ER -
ID: 100635573