Abstract
The temperature dependence of the surface plasmon energy and bandwidth for silvernanoparticles in the size range 8–30 nm embedded in a silica matrix has been studied usingdiffuse reflection spectroscopy. The dependence shows a non-monotonic jump-like behaviourindicating a low-temperature size-dependent melting of silver nanoparticles. The meltingpoint decreases with the decrease of the nanoparticle size. The hysteresis in thetemperature dependence of the surface plasmon bandwidth has been observed, indicatingthe first-order phase transition.
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