Mixed ionic-electronic conductors (MIECs) such as the (La,Sr)(Co,Fe)O3−d perovskite family are well described in their charge transport through their high temperature applications, i.e., as solid-oxide fuel cell electrodes (600–1000 °C). In this study, the current-voltage (I-V) profiles of these well-known MIEC perovskites are studied between room temperature and 150 °C under bias of ±15 V for potential applications in resistance random access memories. The impact of the metal-oxide interface on the I-V characteristics ranging from ohmic to non-linear hysteretic is discussed for metals of varying work functions and redox potentials, as well as changes in metal electrode distances and areas.

Topics
Work functions, Current-voltage characteristic, Electric fields, Random access memory, Electrical conductor, Perovskites, Thin films, Electrochemistry, Charge transport, Solid oxide fuel cells
© 2012 American Institute of Physics.
2012
American Institute of Physics
You do not currently have access to this content.