Strontium titanate (SrTiO3) is a promising material for resistive high temperature oxygen sensors. Unfortunately, thermal treatment results in undesirable surface reconstruction and the formation of secondary phases. Each of the three stable surface orientations ((1 0 0), (1 1 0) and (1 1 1)) shows a characteristic reconstruction of the topmost layers. To investigate these changes in more detail, SrTiO3(110) single crystals were heated up to 1000 °C in ultrahigh vacuum and synthetic air, respectively. Atomic force microscopy (AFM) was applied to characterize the surface topography. Metastable impact electron spectroscopy (MIES) and Auger electron spectroscopy (AES) yielded information on the electronic structure and the chemical composition of the surface and the near surface region. Under all investigated conditions microfaceting of the (1 1 0) surface could be observed resulting in TiO2-terminated ridges. © 2004 Elsevier B.V. All rights reserved.

Item Type:	Refereed Article
Research Division:	Physical Sciences
Research Group:	Condensed Matter Physics
Research Field:	Surfaces and Structural Properties of Condensed Matter
Objective Division:	Manufacturing
Objective Group:	Ceramics, Glass and Industrial Mineral Products
Objective Field:	Ceramics
Author:	Gunhold, A (Dr Anissa Goemann)
Author:	Goemann, K (Dr Karsten Goemann)
ID Code:	70171
Year Published:	2004
Web of Science® Times Cited:	15
Deposited By:	Central Science Laboratory
Deposited On:	2011-06-06
Last Modified:	2011-08-01
Downloads:	0