CaCu 3 Ti 4O 12/CaTiO 3 composite dielectrics: BaPb -free dielectric ceramics with high dielectric constants

Wataru Kobayashi*, I. Terasaki

*この研究の対応する著者

    研究成果: Article査読

    98 被引用数 (Scopus)

    抄録

    We have measured dielectric properties of Ca1+x Cu3-x Ti4 O12 (x=0, 0.1, 0.5, 1, 1.5, 2, 2.9 and 3), and have found that Ca2 Cu2 Ti4 O12 (a composite of Ca Cu3 Ti4 O12 and CaTi O3) exhibits a high dielectric constant of 1800 with a low dissipation factor of 0.02 below 100 kHz from 220 to 300 K. These are comparable to (or even better than) those of the PbBa -based ceramics, which could be attributed to a barrier layer of CaTi O3 on the surface of the Ca Cu3 Ti4 O12 grains. The composite dielectric ceramics reported here are environmentally benign as they do not contain BaPb.

    本文言語English
    論文番号032902
    ジャーナルApplied Physics Letters
    87
    3
    DOI
    出版ステータスPublished - 2005 7 18

    ASJC Scopus subject areas

    • 物理学および天文学(その他)

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