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Surface analysis of bismuth titanate by Auger and X-ray photoelectron spectroscopy

机译:钛酸铋的俄歇和X射线光电子能谱分析

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摘要

The Auger and XPS technique has been used for investigation in the surface of bismuth titanate (Bi_4Ti_3O_(12)) (BIT) ceramics obtained by reactive sintering from Bi_2O_3 and TiO_2 oxides. All peaks characteristic for bismuth, titanium and oxygen are clearly visible in the spectrum. Oxygen vacancies are preferentially sited in the vicinity of bismuth ions observed by our X-ray photoemission data. The variation in the valence state of titanium ions is also possible. The XPS and AES measurements confirm that the surface elemental composition of bismuth titanate ceramics does not deviate from nominal bulk composition.
机译:俄歇(Auger)和XPS技术已用于研究通过反应烧结从Bi_2O_3和TiO_2氧化物获得的钛酸铋(Bi_4Ti_3O_(12))(BIT)陶瓷的表面。铋,钛和氧的所有特征峰在光谱中清晰可见。根据我们的X射线光发射数据观察到,氧空位优先位于铋离子附近。钛离子的价态的变化也是可能的。 XPS和AES测量结果证实,钛酸铋陶瓷的表面元素组成与标称体积组成没有偏差。

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