Preparation and Properties of Ceramics Prepared from Bi_4Ti_3O_<12> Amorphous Material (<Special Issue> FERROELECTRIC MATERIALS AND THEIR APPLICATIONS)

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概要

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• We attempted to prepare a low-temperature-fired Bi_4Ti_3O_<12> ceramics from an amorphous substance as a basic material and Bi_2O_3 as a liquid phase material. When Bi_2O_3 was added in the amount of 10% by weight to the basic material, and then the mixture was fired under the conditions of 870℃-5 h, ceramic samples having a relative density of about 90% were prepared. The grain sizes of the sample were 2 μm or less, that is, about one-tenth that of a sample fired under standard conditions. The electric properties of the samples were also examined. Results showed that the electrostatic capacitance change (ΔC/C) of the sample caused by the DC bias was relatively low. The DC dielectric breakdown strength was 1.4 times higher, and the remanent polarization was about one-third, as compared with a sample fired under standard conditions.

• 社団法人応用物理学会の論文
• 1994-09-30

著者

• Uehara Yasuo

  Department Of Electrical Engineering Ashikaga Institure Of Technology

• Shoji Kazuo

  Department of Electric and Electronic Engineering, Ashikaga Institute of Technology, 268-1 Omae, Ashikaga, Tochigi 326-8558, Japan

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