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Baur, W.H. (1974) The Geometry of Polyhedral Distortions. Predictive Relationships for the Phosphate Group. Acta Crystallographica Section B: Structural Crystallography and Crystal Engineering and Materials, 30, 1195-1215.
http://dx.doi.org/10.1107/S0567740874004560

has been cited by the following article:

• TITLE: Large Redshifts in Emission and Excitation from Eu2+-Activated Sr2SiO4 and Ba2SiO4 Phosphors Induced by Controlling Eu2+ Occupancy on the Basis on Crystal-Site Engineering

  AUTHORS: Yasushi Sato, Hiroki Kuwahara, Hideki Kato, Makoto Kobayashi, Takaki Masaki, Masato Kakihana

  KEYWORDS: Photoluminescence, Red-Emitting Phosphors, Green-Emitting Phosphors, Orthosilicates, Crystal-Site Engineering

  JOURNAL NAME: Optics and Photonics Journal, Vol.5 No.11, November 25, 2015

  ABSTRACT: The photoluminescence properties of Eu2+-activated α’-Sr2SiO4 and α’-Ba2SiO4 with a high Eu2+ concentration were investigated. In the case of Sr2-xEuxSiO4, emission was shifted from 585 to 611 nm with increasing the total Eu2+ concentration (x) from 0.1 to 0.8. This trend was similar to that in Ba2-xEuxSiO4, where the emission was shifted from 513 to 545 nm. The large redshifts in both the excitation and emission spectra were discussed in terms of the Eu2+ occupancies on two kinds of M sites and their local structural changes (M: Sr and Ba).