Author： Yang Y. Shi J. Huang W. Dai S. Wang L.
Publisher： Springer Publishing Company
ISSN： 0022-2461
Source： Journal of Materials Science, Vol.38, Iss.6, 2003-03, pp. : 1243-1248
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Abstract
High amount of gold nanoparticles was successfully incorporated into amorphous BaTiO3 thin films by sol-gel process. Thiourea was applied to prevent Au ions from being reduced and aggregating as the effective stabilization agents. These films exhibited unique surface plasma resonance red-shifting and particular changes of surface plasma resonance intensity with the increase of heat-treating temperature, which could be attributed to the influence of BaTiO3 ferroelectric domains. The films also exhibited superfast nonlinear optical response and larger third-order nonlinear susceptibility χ(3), which was attributed to hot electron contribution.
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