A Theoretical Interpretation of the Contour and Symmetry of Switching Transients in Ferroelectric Crystals
作者:
J. Gonzalez‐Ibeas,
期刊:
Journal of Applied Physics
(AIP Available online 1967)
卷期:
Volume 38,
issue 13
页码: 5141-5148
ISSN:0021-8979
年代: 1967
DOI:10.1063/1.1709292
出版商: AIP
数据来源: AIP
摘要:
Analytical expressions are developed for obtaining the form that would correspond to the switching‐current pulse of a ferroelectric, if the transit time were non‐negligible. In such a case, two important factors controlling the switching would be: (a) the share of surface area switched by direct nucleation of domains, and (b) the transit velocity of domains walls through the crystal. An experimental switching transient can be characterized by two adimensional data: the expression (im·tm)/(2Ps) and the ratio (change of polarization before the maximum of the current pulse)/(change of polarization after such a maximum). Using these two data as coordinates, a switching pulse can be represented by a point on anx−yplane. From our analytical expressions, a network is plotted on thex−yplane, relating directly the shape of a current pulse to the factors controlling the switching, according to our theory. The method is illustrated using several oscillograms of switching pulses appearing in the literature.
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