AC Conducitivity in Bismuth-Substituted Barium Hexaferrites

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概要

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• Bismuth substituted barium hexaferrites in the composition series BaO・(6-x) Fe_2O_3・xBi_2O_3 with 0<x<0.5 have been prepared and their electrical conductivity measured over the temperature range 325 to 510K. The ac conductivity of the samples obeys a relation σ(ω)〜ω^s with s having values in the range 0.5 to 0.8. The electrical conductivity is believed to arise due to the creation of Fe^<2+> sites by the reducing action of Bi^<3+> ions. The ac conductivity variation is explained on the basis of over-lapping-large-polaron-tunnelling (OLPT) mechanism.

• 社団法人日本物理学会の論文
• 1994-09-15

著者

• Pal M

  Indian Assoc. Cultivation Of Sci. Calcutta Ind

• PAL M.

  Indian Association for the Cultivation of Science

• BRAHMA P.

  Gurudas College

• CHAKRAVORTY D.

  Indian Association for the Cultivation of Science

• Chakravorty D

  Indian Association For The Cultivation Of Science:jawaharial Nehru Centre For Advanced Scientific Re

関連論文

• DC Conductivity in Barium Hexaferrites Doped with Bismuth Oxide
• AC Conducitivity in Bismuth-Substituted Barium Hexaferrites
• Dielectric Behaviour of Metal-Glass-Ceramic Nanocomposites Containing a Ferroelectric Phase
• Interface Impedance in Gels with Fractally Grown Copper Electrode
• AC Conduction Mechanism in Borate Glasses Containing Antimony and Arsenic Ions

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