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
N1 - Publisher Copyright:
© 2014 Elsevier B.V.
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 -