Mn在ATiO/sub / (A=Ba, Sr)中的晶界和晶格扩散

[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI:10.1109/ISAF.1990.200313

J. D. de Vries, R. Waser

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引用次数: 0

摘要

在1000℃至1200℃之间测定了锰在多晶BaTiO/sub 3/和SrTiO/sub 3/中的扩散常数，其值比锰的体积扩散值大4个数量级以上。这一结果与晶界相中Mn的存在一致。有效活化能估计为5.9 ~ 6.8 eV。

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Grain boundary and lattice diffusion of Mn in ATiO/sub 3/ (A=Ba, Sr)

The diffusion constant of Mn in polycrystalline BaTiO/sub 3/ and SrTiO/sub 3/ was determined between 1000 degrees C and 1200 degrees C. Its value was found to be more than four orders of magnitude larger than one would expect for volume diffusion of Mn. This result was in accordance with the presence of Mn in the grain-boundary phases. Effective activation energies of 5.9-6.8 eV are estimated.<>

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[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics

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