کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9567158 | 1503710 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser induced local and periodic phase transformations in iron oxide thin films obtained by chemical vapour deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Laser induced local and periodic phase transformations in iron oxide thin films obtained by chemical vapour deposition Laser induced local and periodic phase transformations in iron oxide thin films obtained by chemical vapour deposition](/preview/png/9567158.png)
چکیده انگلیسی
Iron oxide films have been deposited on Si(100) substrates by chemical vapour deposition (CVD) of iron(III) tert-butoxide ([Fe(OtBu)3]2) in the temperature range 350-450 °C. The precursor flux and substrate temperature were varied to control the phase composition, average grain size and film thickness. The nature of substrate and deposition temperature markedly influence the morphology and iron-oxygen stoichiometry in the CVD deposits. Phase transformations in iron oxide films were achieved through precise local and periodic heating of the films by interfering laser beams. The interaction of iron oxide films with short laser pulses (Nd:YAG, 355 nm) induced partial transformation of hematite (α-Fe2O3) to magnetite (Fe3O4) or magnetite to wüstite (Fe1âxO), respectively. The phase characterization and morphology of the hematite and magnetite films were investigated before and after laser irradiation by X-ray diffractometry, high resolution scanning electron microscopy and white light interferometry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 247, Issues 1â4, 15 July 2005, Pages 513-517
Journal: Applied Surface Science - Volume 247, Issues 1â4, 15 July 2005, Pages 513-517
نویسندگان
Vladimir Sivakov, Christian Petersen, Claus Daniel, Hao Shen, Frank Mücklich, Sanjay Mathur,