Raman spectroscopic study of the antiferroelectric phase transition in the layered squaric acid (H2C4O4)

Kwang Sei Lee, Jeong Ah Seo, Yoon Hwae Hwang, Hyung Kook Kim, Cheol Eui Lee, Kusuo Nishiyama

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Raman spectra of polycrystalline squaric acid (H2C 4O4) were measured in the frequency shift region of 150 - 4000 cm-1 below and above the antiferroelectric phase transition (Tc = 373 K). No marked changes of internal vibrations of the H 2C4O4 molecule in the crystal were observed up to 473 K, indicating that the symmetry of the H2C4O 4 in the antiferroelectric phase persisted to the paraelectric phase.

Original languageEnglish
Pages (from-to)853-857
Number of pages5
JournalJournal of the Korean Physical Society
Volume54
Issue number2 PART 1
DOIs
Publication statusPublished - 2009 Feb

Keywords

  • Antiferroelectric phase transition
  • HCO
  • Internal symmetry
  • Raman spectra
  • Squaric acid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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