Structural and Electric Properties of Sol–Gel-Derived Ba0.9Sr0.1TiO3 Multilayers
Crack-free Ba0.9Sr0.1TiO3 (BST) and Mn-doped Ba0.9Sr0.1TiO3 (BSTM) multilayers with thickness over 2 m have been prepared by chemical solution deposition based on one single precursor. Both multilayers exhibit good performance as Bragg reflectors. Mn doping tends to suppress the leakage current in BST multilayers effectively by smoothing the layers and the reduction of the charge carries. The Mn-doped BST multilayer displays an excellent ferroelectric property, with an average remnant polarization (Pr+–Pr−)/2 of 12.69 C/cm2 and an average coercive field (E+–E−)/2 of about 72.95 kV/cm under an applied field of 440 kV/cm.
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Document Type: Research Article
Affiliations: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
Publication date: April 1, 2007