期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 20, 期 38, 页码 8399-8404出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm00886a
关键词
-
资金
- National Natural Science Foundation of China [20703055]
Thermal treatments from 600 to 1100 degrees C with and without 6 T external magnetic fields were applied to the prepared gold nanoparticle (NP) incorporated mesoporous silica thin films (MSTFs). Significantly enhanced third-order optical nonlinear susceptibilities of the thin films thermally treated with the magnetic field were achieved as compared with that of those thermally treated without the magnetic field. The enhancement reached almost one order of magnitude from 700 to 800 degrees C (i.e. at around the melting point of the gold NPs). The homogeneous dispersion of gold NPs can be maintained up to 1000 degrees C under the magnetic field compared to the exaggerated growth of gold NPs thermally treated without the magnetic field. The origin for such optical nonlinearity enhancement is discussed.
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