Resistance switching in the metal deficient-type oxides: NiO and CoO

The resistance switching properties in Pt ∕ Ni - O ∕ Pt and Pt ∕ Co - O ∕ Pt synthesized by the magnetron sputtering have been investigated. The oxygen partial pressure during sputtering and the post-thermal process are crucial to forming of the trilayer. By investigating x-ray photoemission spectro...

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Bibliographic Details
Published in:Applied physics letters 2007-07, Vol.91 (1), p.012901-012901-3
Main Authors: Shima, Hisashi, Takano, Fumiyoshi, Akinaga, Hiro, Tamai, Yukio, Inoue, Isao H., Takagi, Hide
Format: Article
Language:English
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Summary:The resistance switching properties in Pt ∕ Ni - O ∕ Pt and Pt ∕ Co - O ∕ Pt synthesized by the magnetron sputtering have been investigated. The oxygen partial pressure during sputtering and the post-thermal process are crucial to forming of the trilayer. By investigating x-ray photoemission spectroscopy spectra, the increase of initial resistance in Ni-O was caused by the variation of the stoichiometry, while that in the Co-O was accompanied by the phase transformation between CoO and Co 3 O 4 . The resistance switching in Pt ∕ Co - O ∕ Pt and Pt ∕ Ni - O ∕ Pt exhibits the analogous electrode area and temperature dependences. As a result of the I - V measurements at the elevated temperature, the assistance of Joule heating in the reset process is implied.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2753101