X-ray diffraction and FTIR spectroscopy of heat treated R2O3:3Ga2O3:4B2O3 systems

E. Beregi, A. Watterich, J. Madarász, M. Tóth, K. Polgár

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Abstract

In the R2O3:3Ga2O3:4B2O3 systems (R = La, Nd, Sm, Gd, Ho, Y, Er and Yb), X-ray diffraction and infrared absorption spectroscopy were used to study the solid-state reactions in the 575-1050°C temperature range. In some samples (R = Sm, Gd, Ho, Er and Y) huntite (RGa3(BO3)4) phases accompanied by RBO3 and GaBO3 intermediate phases were identified. However, in the systems of R2O3:3Ga2O3:4B2O3 for R = La3+, Nd3+ and Yb3+, instead of the expected huntite phases, La-, Nd-metaborate or YbGa(BO3)2 dolomite type phases were formed. Detailed XRD of the rare-earth gallium borates are presented for the first time. Based on the above results, some chemical reactions were assumed for the processes.

Original languageEnglish
Pages (from-to)874-878
Number of pages5
JournalJournal of Crystal Growth
Volume237-239
Issue number1-4
DOIs
Publication statusPublished - Apr 2002

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Keywords

  • A1. X-ray diffraction
  • B1. Borates
  • B1. Rare-earth compounds
  • B2. Non-linear optic materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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