کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5364731 1388319 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulsed-laser crystallization and epitaxial growth of metal-organic films of Ca-doped LaMnO3 on STO and LSAT substrates
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Pulsed-laser crystallization and epitaxial growth of metal-organic films of Ca-doped LaMnO3 on STO and LSAT substrates
چکیده انگلیسی
Ca-doped LaMnO3 (LCMO) thin films have been successfully prepared on SrTiO3 (STO) and [(LaAlO3)0.3-(SrAlTaO6)0.7] (LSAT) substrates using the excimer laser assisted metal-organic deposition (ELAMOD) process. The crystallization and the epitaxial growth of the amorphous metal-organic LCMO thin films have been achieved using a KrF excimer laser irradiation while the substrates were kept at constant temperature of 500 °C. Epitaxial films were obtained using laser fluence in the interval of 50-120 mJ/cm2. The microstructure of the LCMO films was studied using cross-section transmission electron microscopy. High quality of LCMO films having smooth surfaces and sharp interfaces were obtained on both the STO and the LSAT substrates. The effect of the laser fluence on the temperature coefficient of resistance (TCR) was investigated. The largest values of TCR of the LCMO grown on the LSAT and the STO substrates of 8.3% K−1 and 7.46% K−1 were obtained at different laser fluence of 80 mJ/cm2 and 70 mJ/cm2, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 15, 30 May 2007, Pages 6527-6530
نویسندگان
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