A careful inspection of the temperature evolution of Pb and Sn nanoparticles encased in a SiOx(x,1) matrix was carried out by means of optical reflectivity and dark field electron microscopy measurements. A strong decrease of the melting temperature with size and the presence of an hysteresis cycle, which clearly separates melting and solidification temperatures, are evidenced. It is shown that an appreciable tailoring of the properties of the effective medium can be obtained.
Fundamental properties of lead and tin metal nanocrystals in a dielectric matrix
MATTEI, GIOVANNI;
1995
Abstract
A careful inspection of the temperature evolution of Pb and Sn nanoparticles encased in a SiOx(x,1) matrix was carried out by means of optical reflectivity and dark field electron microscopy measurements. A strong decrease of the melting temperature with size and the presence of an hysteresis cycle, which clearly separates melting and solidification temperatures, are evidenced. It is shown that an appreciable tailoring of the properties of the effective medium can be obtained.
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