| Autor: |
Yun, C., Chen, X. G., Fu, J. B., Zhang, Y. X., Sun, J. R., Wang, Y. F., Zhang, Y., Liu, S. Q., Lian, G. J., Yang, Y. C., Wang, C. S., Yang, J. B. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2014, Vol. 115 Issue 17, p17C306-1-17C306-3, 3p |
| Abstrakt: |
It was found that by using the same α-Fe2O3 target in fabrication process, an oxygen-deficient and an oxygen-sufficient atmosphere facilitated the formation of Fe3O4 and α-Fe2O3, respectively. The Au/α-Fe2O3/Pt heterostructure showed a memristive bipolar resistance switching. A clear difference was observed in the transport and magnetic properties between the two resistance states. The enhanced conductivity and magnetization in the Au/α-Fe2O3/Pt heterostructure are believed to result from an enhanced electron hopping between Fe3+-Fe2+ pairs and Fe3+-O-Fe2+ double exchange coupling effect. The enhanced Fe2+ comes from a redox transition between two phases (one behaves like Fe3O4 and the other like α-Fe2O3), due to the electrochemical migration of oxygen vacancies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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