Raman spectroscopy and X-ray diffraction studies on celestite

Yen-Hua Chen, Shu Cheng Yu, Eugene Huang, Pei Lun Lee

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

High-pressure Raman spectroscopy and X-ray diffraction studies of celestite (SrSO4) were carried out in a diamond anvil cell at room temperature. Variation in the Raman vibrational frequency and change of lattice parameters with pressure indicate that a transformation occurs in celestite. This transformation caused an adjustment in the SrO polyhedra that affected the stretching-force constant of SO4. Moreover, compressibilities along the crystallographic axes decreased in the order a to c to b. From the compression data, the bulk modulus of the celestite was 87 GPa. Both X-ray and Raman data show that the transition in celestite is reversible.

Original languageEnglish
Pages (from-to)4386-4388
Number of pages3
JournalPhysica B: Condensed Matter
Volume405
Issue number20
DOIs
Publication statusPublished - 2010 Oct 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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