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首页> 外文期刊>Journal of Crystal Growth >Ferroelectric domain structure of highly textured BiFeO_3 microcrystal films prepared by hydrothermal method
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Ferroelectric domain structure of highly textured BiFeO_3 microcrystal films prepared by hydrothermal method

机译:水热法制备高织构BiFeO_3微晶薄膜的铁电畴结构

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摘要

Microcrystal BiFeO_3 films have been prepared on Nb doped SrTiO_3 substrate with the hydrothermal method. The microcrystals in the film are highly textured and c-oriented with the (101)/(011) planes as their preferential side growth facets. These crystal facets intersect the film plane along either x or y direction. Microscopic domain structures are studied by combining the information of both in-plane and out-of-plane piezoresponse microscopy (PFM) measurements. Both 71° and 109° domain walls have been observed. Ordered stripe domains are found in the valley areas between two adjacent grains, which are ascribed to the compressive strain exerted during growth by the neighboring grains.
机译:采用水热法在掺Nb的SrTiO_3衬底上制备了BiFeO_3微晶薄膜。薄膜中的微晶高度织构化并以(101)/(011)平面作为其优先的侧面生长面c取向。这些晶面沿x或y方向与膜平面相交。通过结合平面内和平面外压电响应显微镜(PFM)测量信息来研究微观域结构。已经观察到71°和109°畴壁。在两个相邻晶粒之间的山谷区域中发现有序的条纹区域,这归因于相邻晶粒在生长过程中施加的压缩应变。

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