کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1463009 989641 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spontaneously ordered TiO2 nanostructures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Spontaneously ordered TiO2 nanostructures
چکیده انگلیسی

Titanium dioxide thin films were deposited on quartz substrates kept at different O2 pressures using pulsed laser deposition technique. The effects of reactive atmosphere and annealing temperature on the structural, morphological, electrical and optical properties of the films are discussed. Growth of films with morphology consisting of spontaneously ordered nanostructures is reported. The films growth under an oxygen partial pressure of 3 × 10−4 Pa consist in nanoislands with voids in between them whereas the film growth under an oxygen partial pressure of 1 × 10−4 Pa, after having being subjected to annealing at 500 °C, consists in nanosized elongated grains uniformly distributed all over the surface. The growth of nanocrystallites with the increase in annealing temperature is explained on the basis of the critical nuclei-size model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 8, December 2011, Pages 3307–3315
نویسندگان
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