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Integrated Ferroelectrics
An International Journal
Volume 65, 2004 - Issue 1
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Original Articles

Fatigue Melioration of Neodymium-Modified Bi4Ti3O12 Ceramics

WEI LI National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing, P. R. China, 210093
,
CHENGJU WANG National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing, P. R. China, 210093
,
XIAOMEI LU National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing, P. R. China, 210093
&
JINSONG ZHU National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing, P. R. China, 210093
Pages 225-233 | Received 01 Apr 2004, Accepted 01 May 2004, Published online: 11 Aug 2010
 
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Abstract

Pure and Nd-modified Bi4Ti3O12 ceramics were prepared using the conventional solid state reaction method and their dielectric properties and mechanical properties are investigated. It shows that the activation energy of oxygen vacancies is enhanced whereas the concentration of oxygen vacancies is reduced when Bi3+ ions are partially substituted by Nd3+ ions. The Cole-Cole fitting to the dielectric loss reveals a strong correlation among oxygen vacancies. The strong correlation reduces the activation energy of oxygen vacancies efficiently. Therefore, we conclude that the diluted oxygen vacancies concentration is the origin of the excellent fatigue resistance of Nd-modified Bi4Ti3O12 materials.

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