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

doi:10.3938/jkps.54.853

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 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 (T_c = 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 language	English
Pages (from-to)	853-857
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	54
Issue number	2 PART 1
DOIs	https://doi.org/10.3938/jkps.54.853
Publication status	Published - 2009 Feb

Keywords

Antiferroelectric phase transition
HCO
Internal symmetry
Raman spectra
Squaric acid

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.3938/jkps.54.853

Cite this

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title = "Raman spectroscopic study of the antiferroelectric phase transition in the layered squaric acid (H2C4O4)",

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.",

keywords = "Antiferroelectric phase transition, HCO, Internal symmetry, Raman spectra, Squaric acid",

author = "Lee, {Kwang Sei} and Seo, {Jeong Ah} and Hwang, {Yoon Hwae} and Kim, {Hyung Kook} and Lee, {Cheol Eui} and Kusuo Nishiyama",

year = "2009",

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T1 - Raman spectroscopic study of the antiferroelectric phase transition in the layered squaric acid (H2C4O4)

AU - Lee, Kwang Sei

AU - Seo, Jeong Ah

AU - Hwang, Yoon Hwae

AU - Kim, Hyung Kook

AU - Lee, Cheol Eui

AU - Nishiyama, Kusuo

PY - 2009/2

Y1 - 2009/2

N2 - 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.

AB - 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.

KW - Antiferroelectric phase transition

KW - HCO

KW - Internal symmetry

KW - Raman spectra

KW - Squaric acid

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