Effect of Sm³⁺ Concentration on the Vibrational and Luminescent Properties of LaPO₄

Abstract:

Lanthanum orthophosphate (LaPO₄) is a useful host for doping rare earth ions with high quantum efficiencies. In the present investigation the monoclinic LaPO₄ and LaPO₄:Sm³⁺ were synthesized via hydrothermal route. SEM, XRD, FTIR and Raman spectroscopy as well as the luminescence spectroscopy were utilized to character the samples of the Sm³⁺-doped LaPO₄. The results indicated that the lattice parameters decreased linearly with Sm³⁺ concentration, and general linear hypsochromic shifts regarding Sm³⁺ concentration were observed in infrared spectroscopic wavenumbers and Raman band positions. The emission spectra showed that Sm³⁺ ions were in more non-centrosymmetric environment when Sm³⁺ concentration increased.

• Periodical: Materials Science Forum (Volume 848)
• Pages: 482-488
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.848.482
• Online since: March 2016
• Authors: Zhong Ju Zhang, Xu Dong Zheng, Zhi Cheng Shi, Xin Wang
• Keywords: Concentration, LaPO₄:Sm³⁺, Luminescence, Vibration

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