A study of the applicability of nucleation theory to quasi-thermodynamic transformations of second and higher Ehrenfest-order
- Barker, R. E., Jr.
- Jun 14, 1985.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available. and Free-to-read Unrestricted online access
- Transient and steady-state phenomena in temperature, stress, and electric, field intensity in ferroelectric polymers were investigated. The application and extension of the theory in the primary stage to the polarization domain nucleation and growth in ferroelectric polymers were developed. The kinetics of this growth were investigated. Expressions describing nucleation under the influence of an electric field were found through the expansion of the Gibbs' free energy in a Maclaurin series. The series was expanded in the electric field strength rather than the degree of undercooling. The resulting expressions were manipulated and applied to the case of nucleation of polarized domains in ferroelectric polymers. The kinetics of the nucleation and growth of polarized domains are also investigated. This was accomplished through the modification of the Johnson-Mehl-Avrami treatment of crystallization kinetics to be applicable to the growth of polarization domains in ferroelectric materials.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19860001593., Accession ID: 86N11060., NASA-CR-176230., UVA/5-28230., NAS 1.26:176230., and SAPR-2.
- No Copyright.
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