Abstract
The results of aging studies carried out on discontinuous β-Sn films deposited on glass and mica substrates held at room temperature under vacuum of 6 × 10—4 Pa are presented in this work. The films were prepared by thermal evaporation at a rate of 3–4 Å/s. The agglomeration and coalescence rates for films of different initial resistance (R0) and successive depositions were studied. It is found that the values of agglomeration or coalescence rates decrease with increasing deposition number for all the investigated films. A film with an initial resistance of 33 GΩ/□ showed a drastic fall in resistance after about 6 min of aging. This interesting discontinuous–semi-continuous transition observed in a conservative system is a clear evidence for the mobility of islands.
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