Peculiar Ferroelectric Domain Patterns Observed on Quenched Sodium Nitrite

Autor:	Kiyoshi Abe, Katsumi Hamano, Toshiharu Mitsui
Rok vydání:	1998
Předmět:	Quenching chemistry.chemical_compound Materials science chemistry Condensed matter physics Electrode General Physics and Astronomy Depolarization Sodium nitrite Polarization (waves) Ferroelectricity Microscopic observation
Zdroj:	Journal of the Physical Society of Japan. 67:4139-4146
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.67.4139
Popis:	Ferroelectric domain patterns which appear under three different quenching conditions have been studied by means of an etching technique. When a b -plate sample is quenched from above T C , a three-dimensional pattern which varies dramatically along the thickness direction is often observed. When single-domain samples are quenched from temperatures between about T C -30°C and T C , the polarization reversal occurs locally and two-dimensional domain patterns are formed. The polarization reversal is caused by the depolarization field which appears during quenching even when the electrodes are short-circuited. When a single-domain sample is heated and quenched in the middle of the C-to-IC transition, the nucleated IC phase regions are converted to ferroelectric domains. These domains and those produced by the polarization reversal in the commesurate phase regions are superposed to one another and make up complicated domain patterns.
Databáze:	OpenAIRE
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