Effects of Niobium Addition on the Relaxor Ferroelectric Properties and Ordering Structures of Lead Iron Tantalates

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概要

• 論文の詳細を見る

• Pyrochlore-free Pb(Fe1/2Ta1/2)O3, Pb(Fe1/2Nb1/2)O3, and complete series of solid solutions between them were fabricated and their ordering structures as well as their dielectric properties were investigated. The dielectric properties of Pb(Fe1/2Ta1/2)O3 were those of typical relaxor ferroelectrics showing evident dielectric relaxation and diffusive phase transition, but the degrees of diffusive phase transition and dielectric relaxation decreased as Ta5+ was replaced by Nb5+. Also, the Fe3+ and Ta5+ ions of Pb(Fe1/2Ta1/2)O3 were ordered within the nanoscale region, but the degree of ordering decreased as Ta5+ was replaced by Nb5+. The loss of relaxor ferroelectric characteristics in Pb(Fe1/2Ta1/2)O3 with the replacement of Ta5+ by Nb5+ was correlated with the weakening of the ordering.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-09-15

著者

• Byung-kook Kim

  Division Of Materials Korea Institute Of Science And Technology

• Kim Byung-kook

  Division Of Ceramics Korea Institute Of Science And Technology

• Woo Byong-Chul

  Division of Materials, Korea Institute of Science and Technology, Seoul 136-791, Korea

• Woo Byong-chul

  Division Of Materials Korea Institute Of Science And Technology

関連論文

• Cationic Ordering Structures of Lead Magnesium Niobates with Isovalent Dopants Having Different Ionic Radii
• Effects of Niobium Addition on the Relaxor Ferroelectric Properties and Ordering Structures of Lead Iron Tantalates
• Cationic Ordering Structures of Lead Magnesium Niobates with Isovalent Dopants Having Different Ionic Radii

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