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American Institute of Physics, Applied Physics Letters, 19(93), p. 193111

DOI: 10.1063/1.3025853

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Room temperature ferromagnetism at self-assembled monolayer modified Ag nanocluster-ZnO nanowire interface

Journal article published in 2008 by S. Deng, K. P. Loh ORCID, J. B. Yi, J. Ding, H. R. Tan, M. Lin ORCID, Y. L. Foo, M. Zheng, C. H. Sow
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Magnetic characterization of ZnO nanowires (NW) decorated with thiol-capped Ag nanoclusters (NCs) reveals spontaneous field-dependent magnetization and hysteresis at room temperature. The saturation magnetization is temperature independent for the 13nm thiol-capped Ag NCs but unexpectedly increases with temperature for the 4nm thiol-capped Ag NCs. The high magnetic moment results from the efficient dispersal of Ag NCs on the ZnO NW scaffold and charge transfer interaction between Ag and ZnO. The anomalous magnetic behavior in 4nm NCs may be due to the spin reorientation of Ag–S dipoles mediated by Zn–S dipoles.