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Barium Titanate Prepared by Stearic Acid-Gel Method |
REN Tianling;ZHANG Peilin;WANG Yuguo;ZHONG Weilie;WANG Xiaohui*;XU Baokun* |
Department of Physics, Shandong University, Jinan 250100
*Department of Chemistry, JiJin University, Changchun 130023 |
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Cite this article: |
REN Tianling, ZHANG Peilin, WANG Yuguo et al 1994 Chin. Phys. Lett. 11 310-313 |
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Abstract Stearic acid-gel method was used to prepare barium titanate. All the samples show a cubic perovskite structure and thus no ferroelectricity is detected at room temperature. X-ray diffraction reveals that the grains can hardly grow even firing at high temperature so that the grain size in most of the samples is below the ferroelectric critical size. A tentative explanation is proposed of the peculiarities based on the nonstoichiometry at the surface layer.
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Keywords:
77.80.-e
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Published: 01 May 1994
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PACS: |
77.80.-e
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(Ferroelectricity and antiferroelectricity)
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