Raman spectroscopic determination of Sr/Ca ratios of calcite samples

Yusuke Shibano, Kohei Takahata, Jun Kawano, Tsuyoshi Watanabe, Daisuke Enomoto, Hiroyuki Kagi, Natsumi Kamiya, Junji Yamamoto

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the relation between Sr# [= 100 Sr/(Sr + Ca) in mol] of calcites and their Raman spectra for Sr-doped calcite samples with Sr# of 0–13.2. We selected 3 major Raman peaks observed at 150–155 cm−1 (peak A), 274–282 cm−1 (peak B), and 710–712.5 cm−1 (peak C). With increasing Sr#, the peaks shifted monotonously to lower wavenumbers. We obtained a linear expression for peak B as Sr# = −1.734 ΔνB + 76.93, where ΔνB is a separation between peak B and a neon emission line of 237.07 cm−1 in Raman shift. The present spectroscopic analysis can ascertain Sr# of calcite with precision of ±1.26 in the range of Sr# of 0–13.2.

Original languageEnglish
Pages (from-to)1755-1761
Number of pages7
JournalJournal of Raman Spectroscopy
Volume48
Issue number12
DOIs
Publication statusPublished - Dec 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Spectroscopy

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