Kraya Laura Y, Kraya Ramsey
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
Acta Crystallogr B Struct Sci Cryst Eng Mater. 2013 Apr;69(Pt 2):105-9. doi: 10.1107/S2052519213003308. Epub 2013 Mar 14.
The structural details of ferroelectric surfaces influence the effect of ferroelectric polarization on surface chemistry, and it is important to understand and control defect functionality as well as identify adsorption sites in ferroelectric materials. Ferroelectric domain polarization has been found to have a significant effect on surface properties and interactions. Here, both the structure and the presence of local electric fields are examined simultaneously. The surface structure and ferroelectric domain orientation are controlled while molecular adsorption effects are quantified. We use scanning tunneling microscopy (STM) to determine the surface and electronic effects of polarization-gas interactions on a model ferroelectric surface, BaTiO3 (001).
铁电体表面的结构细节会影响铁电极化对表面化学的作用，理解并控制缺陷功能以及识别铁电材料中的吸附位点很重要。已发现铁电畴极化对表面性质和相互作用有显著影响。在此，同时研究结构和局部电场的存在情况。在量化分子吸附效应的同时，控制表面结构和铁电畴取向。我们使用扫描隧道显微镜（STM）来确定极化 - 气体相互作用对模型铁电体表面BaTiO₃(001)的表面和电子效应。
