Temperature dependence of PL and EPR spectra of Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals

Sławomir M. Kaczmarek; Taiju Tsuboi; Anna Leniec; Yosuke Nakai; Grzegorz Leniec; Marek Berkowski; Wei Huang

doi:10.1016/j.jcrysgro.2014.02.035

Temperature dependence of PL and EPR spectra of Sr_0.33Ba_0.67Nb₂O₆:Cr (0.02 mol%) single crystals

Sławomir M. Kaczmarek, Taiju Tsuboi, Anna Leniec, Yosuke Nakai, Grzegorz Leniec, Marek Berkowski, Wei Huang

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Sr_0.33Ba_0.67Nb₂O₆:Cr (0.02 mol%) single crystals have been prepared by the Czochralski method. They were investigated by electron paramagnetic resonance and photoluminescence in a temperature range of 3-300 K. The EPR signal shows at least two magnetically non-equivalent centers. We have calculated temperature and angular dependences of the EPR spectra, and spin Hamiltonian parameters for both centers. Low temperature photoluminescence spectra reveal emission bands at 765 and 824 nm in addition to an intense emission band at 537 nm. From the EPR and PL analysis, it is suggested that two different Cr-associated defect centers are present in this crystal.

Original language	English
Pages (from-to)	798-801
Number of pages	4
Journal	Journal of Crystal Growth
Volume	401
DOIs	https://doi.org/10.1016/j.jcrysgro.2014.02.035
State	Published - 1 Sep 2014
Externally published	Yes

Keywords

A1. Crystal structure
A2. Czochralski method
A2. Single crystal growth
B1. Niobates
B2. Ferroelectric materials
B3. Nonlinear optical

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10.1016/j.jcrysgro.2014.02.035

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title = "Temperature dependence of PL and EPR spectra of Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals",

abstract = "Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals have been prepared by the Czochralski method. They were investigated by electron paramagnetic resonance and photoluminescence in a temperature range of 3-300 K. The EPR signal shows at least two magnetically non-equivalent centers. We have calculated temperature and angular dependences of the EPR spectra, and spin Hamiltonian parameters for both centers. Low temperature photoluminescence spectra reveal emission bands at 765 and 824 nm in addition to an intense emission band at 537 nm. From the EPR and PL analysis, it is suggested that two different Cr-associated defect centers are present in this crystal.",

keywords = "A1. Crystal structure, A2. Czochralski method, A2. Single crystal growth, B1. Niobates, B2. Ferroelectric materials, B3. Nonlinear optical",

author = "Kaczmarek, {S{\l}awomir M.} and Taiju Tsuboi and Anna Leniec and Yosuke Nakai and Grzegorz Leniec and Marek Berkowski and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2014",

month = sep,

day = "1",

doi = "10.1016/j.jcrysgro.2014.02.035",

language = "英语",

volume = "401",

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journal = "Journal of Crystal Growth",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Temperature dependence of PL and EPR spectra of Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals

AU - Kaczmarek, Sławomir M.

AU - Tsuboi, Taiju

AU - Leniec, Anna

AU - Nakai, Yosuke

AU - Leniec, Grzegorz

AU - Berkowski, Marek

AU - Huang, Wei

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals have been prepared by the Czochralski method. They were investigated by electron paramagnetic resonance and photoluminescence in a temperature range of 3-300 K. The EPR signal shows at least two magnetically non-equivalent centers. We have calculated temperature and angular dependences of the EPR spectra, and spin Hamiltonian parameters for both centers. Low temperature photoluminescence spectra reveal emission bands at 765 and 824 nm in addition to an intense emission band at 537 nm. From the EPR and PL analysis, it is suggested that two different Cr-associated defect centers are present in this crystal.

AB - Sr0.33Ba0.67Nb2O6:Cr (0.02 mol%) single crystals have been prepared by the Czochralski method. They were investigated by electron paramagnetic resonance and photoluminescence in a temperature range of 3-300 K. The EPR signal shows at least two magnetically non-equivalent centers. We have calculated temperature and angular dependences of the EPR spectra, and spin Hamiltonian parameters for both centers. Low temperature photoluminescence spectra reveal emission bands at 765 and 824 nm in addition to an intense emission band at 537 nm. From the EPR and PL analysis, it is suggested that two different Cr-associated defect centers are present in this crystal.

KW - A1. Crystal structure

KW - A2. Czochralski method

KW - A2. Single crystal growth

KW - B1. Niobates

KW - B2. Ferroelectric materials

KW - B3. Nonlinear optical

UR - http://www.scopus.com/inward/record.url?scp=84906960597&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2014.02.035

DO - 10.1016/j.jcrysgro.2014.02.035

M3 - 文章

AN - SCOPUS:84906960597

SN - 0022-0248

VL - 401

SP - 798

EP - 801

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

ER -

Temperature dependence of PL and EPR spectra of Sr_0.33Ba_0.67Nb₂O₆:Cr (0.02 mol%) single crystals

Abstract

Keywords

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