Observation of critical behaviors in squaric acid by 1H nuclear magnetic resonance

Cheol Eui Lee, C. H. Lee, M. W. Park

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The phase transitions in squaric acid, a two-dimensional antiferroelectric system, was observed by using 1H nuclear magnetic resonance. The spin-lattice relaxation time was measured using the inversion recovery method, and spin-spin relaxation time was obtained from solid echo decay. To check the possibilty of decomposition of the sample by heating, differential scanning calorimetry (DSC) measurements were employed, which indicated no changes upon thermal cycling. The spin relaxation measurements indicated a slow-motion limit.

Original languageEnglish
Pages (from-to)565-567
Number of pages3
JournalSolid State Communications
Volume129
Issue number9
DOIs
Publication statusPublished - 2004 Mar 1

Fingerprint

Relaxation time
Nuclear magnetic resonance
nuclear magnetic resonance
acids
Spin-lattice relaxation
Acids
Thermal cycling
relaxation time
Differential scanning calorimetry
Phase transitions
Decomposition
Heating
Recovery
spin-lattice relaxation
echoes
heat measurement
recovery
inversions
decomposition
cycles

Keywords

  • D. Phase transitions
  • E. Nuclear resonances

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Observation of critical behaviors in squaric acid by 1H nuclear magnetic resonance. / Lee, Cheol Eui; Lee, C. H.; Park, M. W.

In: Solid State Communications, Vol. 129, No. 9, 01.03.2004, p. 565-567.

Research output: Contribution to journalArticle

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AB - The phase transitions in squaric acid, a two-dimensional antiferroelectric system, was observed by using 1H nuclear magnetic resonance. The spin-lattice relaxation time was measured using the inversion recovery method, and spin-spin relaxation time was obtained from solid echo decay. To check the possibilty of decomposition of the sample by heating, differential scanning calorimetry (DSC) measurements were employed, which indicated no changes upon thermal cycling. The spin relaxation measurements indicated a slow-motion limit.

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