Optical and X-Ray Studies of Domain Formation in KH_2PO_4 Crystal
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概要
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The domain formation in I<DP crystal has been investigated with optical observa-lion and X-ray measurement under various conditions. It is found that the relation be-tween the thickness d and the domain width w of c-plate crystals under nonelectrodedconditions does not follow the well-known square-root law. In the region of d<1nxrn, w obeys the relation w=a-I- 4, whereas in the region of d>1 mm, w ispractically constant. In order to explain this result a domain formation model is pro-posed based on the spinodal decomposition with an interaction between the domainwalls. The X-ray measurement reveals that the angle between the domain walls with(100) and (010) orientations is deviated slightly from 90' in the specimen eliminatingthe depolarizing field. This deviation is satisfactorily interpreted with the unequalvolume fractions of positive and negative domains.
- 社団法人日本物理学会の論文
- 1987-02-15
著者
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ABE Kohji
Department of Applied Physics and Chemistry,University of Electro-Communications
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Abe K
Teikyo Univ. Kanagawa
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Abe Kohji
Department Of Applied Physics And Chemistry The University Of Electro-communications
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