کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8029898 | 1517650 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical and magnetic properties of mixed crystal Ti0.95Ni0.05O2 films deposited on Si substrates by sol-gel method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Optical and magnetic properties of mixed crystal Ti0.95Ni0.05O2 films deposited on Si substrates by sol-gel method Optical and magnetic properties of mixed crystal Ti0.95Ni0.05O2 films deposited on Si substrates by sol-gel method](/preview/png/8029898.png)
چکیده انگلیسی
Ni-doped mixed crystal TiO2 films, Ti0.95Ni0.05O2, were fabricated on Si(100) substrates by sol-gel process. The influences of annealing times on the structural, optical and magnetic properties were investigated. X-ray diffraction measurement indicates that all the films include anatase and rutile phases. The optical constants were obtained by fitting ellipsometric spectra with Adachi's dielectric function model. With increasing rutile content, both the refractive index and the extinction coefficient of the films increase, but the optical band gap EOBG is reduced. The refractive index at 600Â nm abides by Drude's refractive index model with increasing rutile fraction. The magnetic evolution of the films is from ferromagnetic, to paramagnetic and then ferromagnetic states with increasing rutile fraction, which may be related to the magnetic polarons in the Ni-doped TiO2 films. The results indicate that optical and magnetic properties of Ni-doped TiO2 films can be tuned by controlling phase fraction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 228, 15 August 2013, Pages 162-166
Journal: Surface and Coatings Technology - Volume 228, 15 August 2013, Pages 162-166
نویسندگان
Huiping Gao, Jianjun Tian, Hui Kong, Pingxiong Yang, Weifeng Zhang, Junhao Chu,