Structure and Luminescent Properties of Y17.33(BO3)4(B2O5)2O16

✍ Scribed by J.H. Lin; S. Zhou; L.Q. Yang; G.Q. Yao; M.Z. Su; L.P. You

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 319 KB
• Volume: 134
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1997.7567

✦ Synopsis

Yttrium borate Y 17.33 (BO 3 ) 4 (B 2 O 5 ) 2 O 16 , known as Y 3 BO 6 previously, was prepared from stoichiometric starting materials of H 3 BO 3 and Y 2 O 3 by a solid-state reaction at high temperatures. Y 17.33 (BO 3 ) 4 (B 2 O 5 ) 2 O 16 crystallizes in the monoclinic space group Cm with the lattice constants a ‫؍‬ 1816.62(3), b ‫؍‬ 365.16(1), c ‫؍‬ 1397.75(3) pm, and ‫؍‬ 119.75(2)°. The structure of Y 17.33 (BO 3 ) 4 (B 2 O 5 ) 2 O 16 was determined using the direct methods applied to X-ray powder diffraction data and consists of BO 3؊ 3 and B 2 O 4؊ 5 borate groups and seven-and eight-coordinated yttrium atoms. The composition obtained from the structure determination corresponds to Y 3 BO 6 with a slight excess of B 2 O 3 . The luminescent properties of the Eu 3؉ doped Y 17.33 (BO 3 ) 4 (B 2 O 5 ) 2 O 16 materials were studied and the Eu 3؉ emission appears as superimposed bands with a high self-quenching concentration.