Thickness dependence of the nucleation field of triglycine sulphate
- 1 December 1962
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 7 (84) , 2027-2034
- https://doi.org/10.1080/14786436208214471
Abstract
The applied electric field at the onset of polarization reversal during switching of a triglycine sulphate single crystal with a sinusoidal applied field has been measured as a function of crystal thickness. In contrast to the sinusoidal coercive field measurements of Pulvari and Kuebler (1958), this field is frequency independent and thickness dependent according to the relation En α (thickness)−2/3. The results are discussed as a nucleation phenomenon on the basis of a simple model and lead to an estimate of the domain wall surface energy of triglycine sulphate as being of the order of 1 erg/cm2. Finally a criticism of the theory is discussed.Keywords
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