Journal ArticleDOI
Studies on the stability of discontinuous silver films with overlayers of Al2O3 and SiO2
TLDR
In this paper, experiments carried out on the stability of discontinuous silver films with overtayers of A12Os and SiO2 studied at room temperature and at 125 K were carried out.Abstract:
Results are given of experiments carried out on the stability of discontinuous silver films with overtayers of A12Os and SiO2 studied at room temperature and at 125 K. Long term stability (upto 3500 h) of two films is achieved after ageing for 700 h. The overlayers of A12O3 and SiO2 are unableto prevent oxidation and attack by water vapour of the metal islands resulting in the initial changes in resistance on exposure to atmosphere. Overlayers of A12O3 and SiO2 also do not prevent resistance increase of the films in vacuum (2 × 10−4 Pa) studied at both, room temperature and at 125 K. Resistance measurements as a function of the chamber pressure during exposure to atmosphere reveal that the films oxidise in a well defined pressure range of 6.6 Pa. Non-linear current-voltage (I-U) characteristics are observed for all the films which is explained as due to a field induced structural change as indicated by an irreversible resistance change.
Es werden die Ergebnisse von Untersuchungen der Stabilitat von diskontinuierlichen Silberschichten mit A12O3- und SiO2-uberzugen bei Raumtemperatur und 125 K mitgeteilt. Langzeitstabilitat (bis zu 3500 h) von zwei Schichten wird nach Alterung uber 700 h erhalten. A12O3- und SiO2-uberzuge sind nicht in der Lage, Oxydation und Wasserdampfeinflusse auf die metallischen Inseln zu verhindern, was zu Anderungen des Anfangswiderstands in Abhangigkeit von der Einwirkung der Atmosphare resultiert. A12O3- und SiO2-uberzuge verhindern auch nicht den Widerstandsanstieg der Schichten im Vakuum (2 × 10−4 Pa) der sowohl bei Zimmertemperatur als auch bei 125 K untersucht wird. Widerstandsmessungen in Abhangigkeit vom Kammerdruck wahrend der Einwirkung der Atmosphare zeigen, das die Schichten in einem wohldefinierten Druckbereich von 6,6 Pa oxydieren. Nichtlineare Strom-Spannungs (I-U)-Charakteristiken werden fur alle Schichten beobachtet, was durch das Auftreten einer feldinduzierten strukturellen Anderung, die durch eine irreversible Widerstandsanderung angezeigt wird, erklart wird.read more
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Journal ArticleDOI
Electrical behaviour of discontinuous silver films deposited on softened polyvinylpyridine substrates
Manjunatha Pattabi,K. Mohan Rao +1 more
TL;DR: In this paper, the electrical properties of discontinuous silver films on poly(2-vinylpyridine) (PVP) coated substrates held at temperatures in the range 410-475 K in a vacuum of are reported.
Journal ArticleDOI
Influence of a magnetic field on the aging rates of island silver films
TL;DR: In this article, the effect of magnetic field on the aging rates of island silver films was investigated and it was observed that the application of a magnetic field of strength 80 G during and after growth of the island film reduced the aging rate.
Journal ArticleDOI
Effect of strain on the I–V characteristics of discontinuous silver films and determination of their gauge factor
TL;DR: In this paper, the effect of strain on the I-V characteristics of discontinuous silver films and determination of their gauge factor was studied and it was found that a deviation from linearity is observed at higher voltages (>60 V) and at particular voltage.
Journal ArticleDOI
The effect of overlayers on the stability of discontinuous silver films deposited on softened poly(2-vinylpyridine) substrates
Manjunatha Pattabi,K. Mohan Rao +1 more
TL;DR: In this paper, the effect of inorganic overlayers on the long-term stability of discontinuous silver films deposited on softened poly(2-vinylpyridine) (PVP) substrates is reported.
References
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Journal ArticleDOI
Electrical Conduction Mechanism in Ultrathin, Evaporated Metal Films
C. A. Neugebauer,M. B. Webb +1 more
TL;DR: In this paper, the authors investigated the electrical conduction mechanism in the film plane of ultrathin, evaporated metal films and showed that the conductivity depends exponentially on reciprocal temperature, and it should be independent of field at low fields.
Journal ArticleDOI
Morphological Changes in Discontinuous Gold Films following Deposition
J. G. Skofronick,W. B. Phillips +1 more
TL;DR: In this paper, the authors observed that discontinuous gold films exhibit temperature-dependent morphological changes following deposition and observed that the initial deposited nuclei are nearly circular and have a doubled peaked size distribution.
Journal ArticleDOI
Coalescence and agglomeration of gold films
G.G. Paulson,A.L. Friedberg +1 more
TL;DR: In this article, the effect of adsorbate gases on the nucleation and growth characteristics of gold thin films on glass surfaces was studied using resistance measurements and electron microscopy techniques, and it was found that the adsorption of hydrogen, nitrogen and oxygen on the glass substrates after glow discharge cleaning was found to influence the island structure and coalescence of discontinuous gold films.
Journal ArticleDOI
Resistance changes in discontinuous gold films
Masaki Nishiura,Akira Kinbara +1 more
TL;DR: In this paper, the electrical resistance of vacuum-deposited island films of gold after deposition has been investigated and it was found that the morphological change of the island particles due to surface self-diffusion, provided that the electron transport between the island particle obeys the relationship derived by Neugebauer and Webb.
Journal ArticleDOI
Behavior of Ultrathin Zirconium Films upon Exposure to Oxygen
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