Fractal parameterization analysis of ferroelectric domain structure evolution induced by electron beam irradiation

[摘要] The article presents some results of fractal analysis of ferroelectric domain structure images visualized with scanning electron microscope (SEM) techniques. The fractal and multifractal characteristics were estimated to demonstrate self-similar organization of ferroelectric domain structure registered with static and dynamic contrast modes of SEM. Fractal methods as sensitive analytical tools were used to indicate degree of domain structure and domain boundary imperfections. The electron irradiation-induced erosion effect of ferroelectric domain boundaries in electron beam-stimulated polarization current mode of SEM is characterized by considerable raising of fractal dimension. For dynamic contrast mode of SEM there was revealed that complication of domain structure during its dynamics is specified by increase in fractal dimension of images and slight raising of boundary fractal dimension.

[发布机构] Physics Engineering Department, Amur State University, 21 Ignatyevskoe Shosse, Blagoveshchensk; 675000, Russia^1

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Boundary fractal dimension;Domain structure;Electron beam irradiation;Ferroelectric domain boundaries;Ferroelectric domain structure;Fractal analysis;Multifractal characteristics;Polarization current