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Growth, structure, defects and polarized absorption spectral properties of Er:Yb:YCa₄O(BO₃)₃ crystals

Title data

Zhong, Degao ; Teng, Bing ; Kong, Weijin ; Zhang, Shiming ; Li, Yuyi ; Li, Jianhong ; Yang, Liting ; Cao, Lifeng ; van Smaalen, Sander:
Growth, structure, defects and polarized absorption spectral properties of Er:Yb:YCa₄O(BO₃)₃ crystals.
In: Journal of Solid State Chemistry. Vol. 233 (January 2016) . - pp. 120-124.
ISSN 0022-4596
DOI: https://doi.org/10.1016/j.jssc.2015.10.021

Official URL: Volltext

Abstract in another language

Abstract YCa₄O(BO₃)₃ (YCOB) crystals co-doped with 3 at Er3+ and 20 at Yb3+ were successfully grown by the Czochralski method. X-ray powder diffraction (XRPD) results show that the as-grown Er:Yb:YCOB crystal belongs to the monoclinic system with space group Cm. And the lattice parameters are a=8.076(8) Å, b=16.023(7) Å, c=3.528(4) Å and β=101.15(4)°. Crystal defects were revealed by chemical etching experiments. The density of etch pits, attributed to dislocations and observed on (010) planes, was found to be not uniform along the crystal diameter. The detailed polarized absorption spectra were measured. The polarized absorption cross sections at 977 nm are 1.01×10−20, 1.22×10−20 and 1.05×10−20 cm2 for E//X, E//Y and E//Z, respectively. And the polarized absorption cross sections at 1538 nm is about 1.86×10−20 cm2 for both E//X and E//Z, but for E//Y the result is 1.03×10−20 cm2, which is much smaller. The relationship between the crystal structure and absorption spectra was discussed.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Crystal defects
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
Date Deposited: 01 Dec 2016 08:08
Last Modified: 31 Jan 2019 11:34
URI: https://eref.uni-bayreuth.de/id/eprint/35233