Accession Number : AD0694279

Title :   CHANGE OF HIGH-FREQUENCY PERMITTIVITY AT AN ORIENTATIONAL ORDER-DISORDER TRANSFORMATION: A METHOD OF DETECTING VERY SLOW TRANSFORMATIONS,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s) : Whalley,E.

Report Date : 10 JAN 1969

Pagination or Media Count : 2

Abstract : It seems likely that order-disorder transformations in crystals of polar molecules can be detected by measuring the infrared polarization by means of the high-frequency permittivity. This is particularly valuable if the transition is slow because capacitance bridges can be bought that are sensitive to 1 ppm or less. A transition that requires several months for completion can therefore be readily detected even if the permittivity changes only slightly. (Author)

Descriptors :   (*DIELECTRICS, PHASE STUDIES), (*PHASE STUDIES, DETECTION), DIELECTRIC PROPERTIES, INFRARED RADIATION, BAND SPECTRA, POLARIZATION, ICE, CANADA

Subject Categories : Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE