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Electro-forming of vacancy-doped metal-SrTiO3-metal structures

Published online by Cambridge University Press:  28 June 2011

Florian Hanzig ,
Juliane Seibt ,
Hartmut Stoecker ,
Barbara Abendroth  and
Dirk C. Meyer
Florian Hanzig
Affiliation:
Institute of Experimental Physics, TU Bergakademie Freiberg, 09596-Freiberg, Germany.
Juliane Seibt
Affiliation:
Institute of Experimental Physics, TU Bergakademie Freiberg, 09596-Freiberg, Germany.
Hartmut Stoecker
Affiliation:
Institute of Experimental Physics, TU Bergakademie Freiberg, 09596-Freiberg, Germany.
Barbara Abendroth
Affiliation:
Institute of Experimental Physics, TU Bergakademie Freiberg, 09596-Freiberg, Germany.
Dirk C. Meyer
Affiliation:
Institute of Experimental Physics, TU Bergakademie Freiberg, 09596-Freiberg, Germany.
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Abstract

Resistance switching in metal – insulator - metal (MIM) structures with transition metal oxides as the insulator material is a promising concept for upcoming non-volatile memories. The electronic properties of transition metal oxides can be tailored in a wide range by doping and external fields. In this study SrTiO3 single crystals are subjected to high temperature vacuum annealing. The vacuum annealing introduces oxygen vacancies, which act as donor centers. MIM stacks are produced by physical vapor deposition of Au and Ti contacts on the front and rear face of the SrTiO3 crystal. The time dependent forming of the MIM stacks under an external voltage is investigated for crystals with varying bulk conductivities. For continued formation, the resistivity increases up to failure of the system where no current can be measured anymore and switching becomes impossible.

Keywords

dielectricelectrical propertiesoxide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1337: Symposium Q – New Functional Materials and Emerging Device Architectures for Nonvolatile Memories , 2011 , mrss11-1337-q06-12
Copyright
Copyright © Materials Research Society 2011

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References

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