High-resolution x-ray study of a smectic-Asmectic-C phase transition

C. R. Safinya; M. Kaplan; J. Als-Nielsen; R. J. Birgeneau; D. Davidov; J. D. Litster; D. L. Johnson; M. E. Neubert

doi:10.1103/PhysRevB.21.4149

High-resolution x-ray study of a smectic-Asmectic-C phase transition

C. R. Safinya^*, M. Kaplan, J. Als-Nielsen, R. J. Birgeneau, D. Davidov, J. D. Litster, D. L. Johnson, M. E. Neubert

^*Corresponding author for this work

Racah Institute of Physics

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

102 Scopus citations

Abstract

We report measurements of the tilt angle and the planar spacing dC near the second-order SmC-SmA transition in 4-n-pentyl-phenylthiol-4-n-octyloxybenzoate (8S»5). We find that the ratio invcos(dCdA) is constant (1.2 ± 0.1) through the C phase, supporting a simple molecular-tilt model for the transition. For 5×10-3>1-TTc>3×10-5, exhibits mean-field behavior. A simple Ginzburg-criterion argument indicates that the true critical region should be unobservably small for most A-C transitions.

Original language	English
Pages (from-to)	4149-4153
Number of pages	5
Journal	Physical Review B
Volume	21
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.21.4149
State	Published - 1980

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title = "High-resolution x-ray study of a smectic-Asmectic-C phase transition",

abstract = "We report measurements of the tilt angle and the planar spacing dC near the second-order SmC-SmA transition in 4-n-pentyl-phenylthiol-4-n-octyloxybenzoate (8S»5). We find that the ratio invcos(dCdA) is constant (1.2 ± 0.1) through the C phase, supporting a simple molecular-tilt model for the transition. For 5×10-3>1-TTc>3×10-5, exhibits mean-field behavior. A simple Ginzburg-criterion argument indicates that the true critical region should be unobservably small for most A-C transitions.",

author = "Safinya, \{C. R.\} and M. Kaplan and J. Als-Nielsen and Birgeneau, \{R. J.\} and D. Davidov and Litster, \{J. D.\} and Johnson, \{D. L.\} and Neubert, \{M. E.\}",

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doi = "10.1103/PhysRevB.21.4149",

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T1 - High-resolution x-ray study of a smectic-Asmectic-C phase transition

AU - Safinya, C. R.

AU - Kaplan, M.

AU - Als-Nielsen, J.

AU - Birgeneau, R. J.

AU - Davidov, D.

AU - Litster, J. D.

AU - Johnson, D. L.

AU - Neubert, M. E.

PY - 1980

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N2 - We report measurements of the tilt angle and the planar spacing dC near the second-order SmC-SmA transition in 4-n-pentyl-phenylthiol-4-n-octyloxybenzoate (8S»5). We find that the ratio invcos(dCdA) is constant (1.2 ± 0.1) through the C phase, supporting a simple molecular-tilt model for the transition. For 5×10-3>1-TTc>3×10-5, exhibits mean-field behavior. A simple Ginzburg-criterion argument indicates that the true critical region should be unobservably small for most A-C transitions.

AB - We report measurements of the tilt angle and the planar spacing dC near the second-order SmC-SmA transition in 4-n-pentyl-phenylthiol-4-n-octyloxybenzoate (8S»5). We find that the ratio invcos(dCdA) is constant (1.2 ± 0.1) through the C phase, supporting a simple molecular-tilt model for the transition. For 5×10-3>1-TTc>3×10-5, exhibits mean-field behavior. A simple Ginzburg-criterion argument indicates that the true critical region should be unobservably small for most A-C transitions.

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High-resolution x-ray study of a smectic-Asmectic-C phase transition

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