کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5347325 1503547 2017 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and temperature stability of highly strained tetragonal-like BiFeO3 thin films
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Microstructure and temperature stability of highly strained tetragonal-like BiFeO3 thin films
چکیده انگلیسی
A highly strained tetragonal (T)-like BiFeO3 (BFO) phase interspersed between two rhombohedral (R)-like phase regions in BFO films grown on LaAlO3 substrates was confirmed by transmission electron microscopy (TEM). The typical width of the T-like phase was about 5-35 nm and the areal fraction of the T-like phase was estimated to be 35%. A lattice misalignment of 3.8° between adjacent R- and T-like phases was observed in both high-resolution TEM images and selected-area electron diffraction patterns. Superlattice reflection spots were observed along the [110] direction in the R-like phase, which were attributed to the antiphase tilting of oxygen octahedra about the pseudocubic [111] axis of the R-like phase. A structural phase transition from the T-like phase to the R-like one at around 435 °C was observed by TEM during in situ heating and cooling experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 425, 15 December 2017, Pages 117-120
نویسندگان
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