2013
DOI: 10.1103/physreve.87.050503
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Smectic-C*liquid crystals with six-layer periodicity appearing between the ferroelectric and antiferroelectric chiral smectic phases

Abstract: We found a subphase with a six-layer periodicity which appears between the ferroelectric SmC(*) and the antiferroelectric SmC(A)(*)(q(T) = 0) phases. The six-layer periodic structure is directly determined by the microbeam resonant x-ray scattering measurement. Furthermore, considering the dielectric constants, this phase was found to be ferrielectric, assigned as SmC(A)(*)(q(T) = 2/3). This subphase indicates the importance of the competition between the ferro- and the antiferroelectric phases and, in that po… Show more

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Cited by 21 publications
(22 citation statements)
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“…Subphases with smaller unit cells of irreducible q T in lower terms in the denominator must be observed more easily, whereas those with larger unit cells of irreducible q T in higher terms in both the numerator and denominator may be suppressed by a number of factors including surface and finite-size effects and thermal fluctuations. Experimentally, seven subphases with q T = 1/5, 1/4, 1/3, 2/5, 1/2, 3/5, and 2/3 are considered to exist [1][2][3][4][23][24][25][26][27].…”
Section: Introductionmentioning
confidence: 99%
“…Subphases with smaller unit cells of irreducible q T in lower terms in the denominator must be observed more easily, whereas those with larger unit cells of irreducible q T in higher terms in both the numerator and denominator may be suppressed by a number of factors including surface and finite-size effects and thermal fluctuations. Experimentally, seven subphases with q T = 1/5, 1/4, 1/3, 2/5, 1/2, 3/5, and 2/3 are considered to exist [1][2][3][4][23][24][25][26][27].…”
Section: Introductionmentioning
confidence: 99%
“…2 (d)), the five peaks are considered to have nearly equal intensities (note that experimental conditions were optimized for the 2/6 reflection). In contrast, the previously reported C 6p layer structures provided the strong 1/6 and 5/6 reflections [22,25]. The Ising (flat), distorted clock, and (perfect) clock models [3] were examined to analyze the molecular arrangement of this new C 6p…”
Section: Discussionmentioning
confidence: 94%
“…Employing an x-ray microprobe with beam size less than 5-μm square and a pixel array x-ray detector, at the Photon Factory, Japan, Y. Takanishi et al [60] obtained two-dimensional microbeam RXRD profiles as a function of temperature from one binary mixture (D0.9 E0.1). The molecular structures and their transition sequences of these two compounds are given on the top of Fig.…”
Section: Downloaded By [University Of Connecticut] At 06:36 01 April mentioning
confidence: 99%