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

S. Deng; K. P. Loh; J. B. Yi; J. Ding; H. R. Tan; M. Lin; Y. L. Foo; M. Zheng; C. H. Sow

doi:10.1063/1.3025853

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

S. Deng
, K. P. Loh
, J. B. Yi
, J. Ding
, H. R. Tan
, M. Lin
, Y. L. Foo
, M. Zheng
, C. H. Sow

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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 13 nm thiol-capped Ag NCs but unexpectedly increases with temperature for the 4 nm 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 4 nm NCs may be due to the spin reorientation of Ag-S dipoles mediated by Zn-S dipoles.

Original language	English
Article number	193111
Journal	Applied Physics Letters
Volume	93
Issue number	19
DOIs	https://doi.org/10.1063/1.3025853
State	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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@article{5f260446f7b54fa1912ce5ae7669134d,

title = "Room temperature ferromagnetism at self-assembled monolayer modified Ag nanocluster-ZnO nanowire interface",

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 13 nm thiol-capped Ag NCs but unexpectedly increases with temperature for the 4 nm 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 4 nm NCs may be due to the spin reorientation of Ag-S dipoles mediated by Zn-S dipoles.",

author = "S. Deng and Loh, \{K. P.\} and Yi, \{J. B.\} and J. Ding and Tan, \{H. R.\} and M. Lin and Foo, \{Y. L.\} and M. Zheng and Sow, \{C. H.\}",

year = "2008",

doi = "10.1063/1.3025853",

language = "English",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "19",

}

TY - JOUR

T1 - Room temperature ferromagnetism at self-assembled monolayer modified Ag nanocluster-ZnO nanowire interface

AU - Deng, S.

AU - Loh, K. P.

AU - Yi, J. B.

AU - Ding, J.

AU - Tan, H. R.

AU - Lin, M.

AU - Foo, Y. L.

AU - Zheng, M.

AU - Sow, C. H.

PY - 2008

Y1 - 2008

N2 - 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 13 nm thiol-capped Ag NCs but unexpectedly increases with temperature for the 4 nm 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 4 nm NCs may be due to the spin reorientation of Ag-S dipoles mediated by Zn-S dipoles.

AB - 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 13 nm thiol-capped Ag NCs but unexpectedly increases with temperature for the 4 nm 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 4 nm NCs may be due to the spin reorientation of Ag-S dipoles mediated by Zn-S dipoles.

UR - https://www.scopus.com/pages/publications/56249131753

U2 - 10.1063/1.3025853

DO - 10.1063/1.3025853

M3 - Article

AN - SCOPUS:56249131753

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 193111

ER -

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

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