Local Structure Of Eu3+ In Borosilicate Glasses By Phonon Sideband Spectra

Zhidong Yao, Yong Ding, Tokuro Nanba, Yoshinari Miura

Research output: Contribution to journalArticlepeer-review

Abstract

InxNa2O (40-x)B2O3 60SiO2 (mol%) (x=5, 10, 15, 20, 25, 30) glasses with 0.25mol% Eu2O3 as additive, the local structure around Eu3+ was explored by employing the phonon sideband spectra of Eu3+ associated with the 5D2 ⃪7F0 transition. It was found that the types and fraction of the structural units around Eu3+ varied with glass composition. Moreover, the B-O vibrational mode of B03 unit exists around Eu3+ when x ≦ 15, which is not present in the same composition glasses free of Eu3-. A greatest asymmetry in the surrounding of Eu3+ occurs at x=10, inconsistent with a maximum of some physical properties found in sodium borosilicate glasses at a Na:B ratio of about unity. In addition, various structural units possess different coordination preference to Eu3+. The highest theoretical microscopic optical basicity on the oxygen atoms in these units was advocated as a criterion of the coordination preference, which successfully elucidated a series of coordination preference phenomena occurring in silicate, borate and borosilicate glasses.

Original languageEnglish
Pages (from-to)239-243
Number of pages5
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume47
DOIs
Publication statusPublished - 1998

Keywords

  • Borosilicate glasses
  • Eu3
  • Local structure
  • Microscopic optical basicity
  • Phonon sideband

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Local Structure Of Eu3<sup>+</sup> In Borosilicate Glasses By Phonon Sideband Spectra'. Together they form a unique fingerprint.

Cite this