Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/体系中焦绿石结构的相变与相分布

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI:10.1109/ISAF.1996.598142

W. Hong, W. Xiaoli, Y. Xi

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引用次数: 3

摘要

采用淬火技术和粉末x射线衍射法，研究了焦绿石结构随成分变化的函数。得到了Bi/sub - 2/O/sub - 3/- zno / nb /sub - 2/O/sub - 5体系中焦绿盐分布区域在1000/spl℃时的等温相图。讨论了立方焦绿石(/spl α /)向正交焦绿石(/spl β /)的转变机理。

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Phase transformation and phase distribution of pyrochlore structure in Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/ system

Using a quenching technique and powder X-ray diffractometry, the pyrochlore structure has been studied as a function of compositional variations. An isothermal phase diagram at 1000/spl deg/C about the pyrochlore distribution area in the Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/ system has been obtained. The transformation mechanism of a cubic pyrochlore (/spl alpha/) to an orthorhombic pyrochlore (/spl beta/) has been discussed.

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ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics

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