کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1617755 1005693 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sol–gel synthesis of Bi3.25La0.75Ti3O12 nanotubes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Sol–gel synthesis of Bi3.25La0.75Ti3O12 nanotubes
چکیده انگلیسی

Ferroelectric Bi3.25La0.75Ti3O12 (BLT) nanotubes were synthesized by sol–gel technique using nanochannel porous anodic aluminum oxide (AAO) templates, and were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). BLT nanotubes with diameter of around 240 nm and the wall thickness of about 25 nm exhibited a single orthorhombic perovskite structure and highly preferential crystal growth along the [1 1 7] orientation, which have smooth wall morphologies and well-defined diameters corresponding to the diameter of the applied template. The formation mechanism of BLT nanotubes was discussed.

Research highlights
► One-dimensional (1D) ferroelectrics have been successfully synthesized. The sol–gel template synthesis is a versatile and inexpensive technique for producing nanostructures, and particularly facilitates the fabrication of complex oxide nanotubes or nanowires. Compared with the synthesis of the general nanotubes such as carbon nanotubes with simple crystal structure, the synthesis of ferroelectric compound is difficult due to the multielement and the complex crystal structures of these ferroelectrics. Herein, we report the synthesis of one-dimensional BLT nanotubes on anodic alumina (AAO) templates by immersing a template membrane in sol without polymeric additive.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 14, 7 April 2011, Pages 4722–4725
نویسندگان
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