کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9783089 | 1511869 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic structures near surfaces of perovskite type oxides
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This work is intended to draw attention to the origin of the electronic structures near surfaces of perovskite type oxides. Deep states were observed by ultraviolet photoelectron spectroscopic measurements. The film thickness dependent electronic structures near surfaces of (Ba0.5Sr0.5)TiO3 thin films were observed. As for the 117-308Â nm thick (Ba0.5Sr0.5)TiO3 films, deep states were lying at 0.20, 0.55, and 0.85Â eV below the quasi-fermi level, respectively. However, as for the 40Â nm thick (Ba0.5Sr0.5)TiO3 film, the states were overlapped. The A-site doping affected electronic structures near surfaces of SrTiO3 single crystals. No evolution of deep states in non-doped SrTiO3 single crystal was observed. However, the evolution of deep states in La-doped SrTiO3 single crystal was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 91, Issues 2â3, 15 June 2005, Pages 243-246
Journal: Materials Chemistry and Physics - Volume 91, Issues 2â3, 15 June 2005, Pages 243-246
نویسندگان
Toru Hara,