It is, therefore, of academical and practical importance to investigate and to clarify the electrical fatigue mechanism of ferroelectrics by using on-line or in-situ technologies.

• 采用现场或原位技术观测电疲劳过程中电畴的变化对研究和探明这类材料的电疲劳机理具有重大的理论指导意义和实际应用价值。