Order Parameter and Distribution Functions for Nematogenic OBA and NBA

A P Divya Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, 570 006, India

K Narayanamurthy Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, 570 006, India

M S Madhava Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, 570 006, India

D Revannasiddaiah Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, 570 006, India

R Somashekar Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, 570 006, India

Abstract

Using refractive index and density data for nematogenic compounds Octyl benzoic acid (OBA) and Nonyl benzoic acid (NBA), orientational order and hence distribution function has been determined. From this, the higher order parameter <P₄>has been estimated for these two compounds. The physical interpretation of these parameters <P₂>and <P₄>has been given in terms of statistical quantities like variance and kurtosis.

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