| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1265596 | Organic Electronics | 2008 | 5 Pages |
Abstract
With the general objective of studying interfaces between ferromagnetic materials and organic semiconductors, we report ac impedance investigations on La0.7Sr0.3MnO3 (LSMO)/tris(8-hydroxyquinoline)aluminum (Alq3)/Al and Indium Tin Oxide (ITO)/Alq3/Al heterostructures, in the frequency range between 20 Hz and 1 MHz. The comparison of the equivalent circuits deduced to fit the experimental ac responses allows isolating a specific RC contribution which can be attributed to the LSMO/Alq3 interface region. Using the information obtained from our ac measurements, we propose a model which fits the temperature dependence of the magnetoresistance in spin valves combining LSMO electrodes and Alq3 layers.
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Authors
M. Barra, A. Cassinese, P. D’Angelo, L.E. Hueso, P. Graziosi, V. Dediu,