Electron microscopy
 
Perovskite-like Ferroelectrics
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

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For perovskite-like structures, the periodic O–B ion–O chains are effective in ferroelectric characteristics so that the direction of the spontaneous polarization is parallel to the a–b plane of the structures because this plane contains the periodic O–B ion–O chains. However, no spontaneous polarization exists along the c-axis because of the lack of periodic symmetry in the O–B ion–O chain.

 

 

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