期刊
MATERIALS
卷 15, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/ma15020578
关键词
barium strontium titanate; thin films; sol-gel method; crystal structure; X-ray photoelectron spectroscopy
类别
资金
- POLISH NATIONAL SCIENCE CENTRE (NCN) [N507 098 31/2319]
This paper presents the results of X-ray photoelectron studies and X-ray diffraction analysis on electroceramic thin films deposited on stainless-steel substrates. The layer-type structure of the thin films, prepared using the sol-gel method, maintained a perovskite-type phase after thermal treatment.
In the present paper, results of X-ray photoelectron studies of electroceramic thin films of barium strontium titanate, Ba1-xSrxTiO3 (BST), composition deposited on stainless-steel substrates are presented. The thin films were prepared by the sol-gel method. A spin-coating deposition of BST layers with different chemical compositions was utilized so the layer-type structure of (0-2) connectivity was formed. After the deposition, the thin-film samples were heated in air atmosphere at temperature T = 700 degrees C for 1 h. The surfaces of BST thin films subjected to thermal treatment were studied by X-ray diffraction. X-ray diffraction measurements confirmed the perovskite-type phase for all grown thin-film samples. The oxidation states of the elements were examined by the X-ray photoelectron spectroscopy method. X-ray photoelectron spectroscopy survey spectra as well as high-resolution spectra (photo-peaks) of the main metallic elements, such as Ti, Ba, and Sr, were compared for the layer-type structures, differing in the deposition sequence of the barium strontium titanate layers constituting the BST thin film.
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