Raman scattering investigations in PrxY1−xAl3(BO3)4 single crystals

✍ Scribed by H. R. Xia; L. X. Li; J. Y. Wang; W. T. Yu; P. Yang

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 116 KB
• Volume: 30
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/(sici)1097-4555(199907)30:7<557::aid-jrs418>3.0.co;2-y

✦ Synopsis

The crystal growth, structure and Raman spectra of the Pr x Y 1-x Al 3 (BO 3 ) 4 (PYAB) single crystals are introduced. The experiments show that the characteristic lattice vibrational spectrum of the PYAB arises mainly from the internal vibrations of the BO 3 and AlO 6 groups, and that the rigidity of the lattice is mainly ascribed to the vibrations of B-O and Al-O bonds. For the Pr/YO 6 groups, there is no O 2-ion that is independent of the BO 3 and AlO 6 groups, and no new internal vibrational mode arises. Hence the characteristic lattice vibrational spectrum is not affected by the rare earth ions doped in the PYAB, and the ions can affect the external vibrations of the BO 3 and AlO 6 groups and improve the structural and optical quality of the crystals.