Abstract
The resistance of aluminium films, coated on glass substrates with annealed and unannealed thick films of gold, silver, copper and aluminium as electrodes, was measured. The percentage variation in resistance of the aluminium films differs with the use of annealed and unannealed electrodes. This variation was found to be greater for gold, silver and copper electrodes and not very marked for aluminium electrodes. The respective roles of factors such as oxide formation and alloying at the film-electrode junction are discussed by considering the observed variation in the resistance of the films. An attempt is also made to correlate this variation with the microscopic features seen at particular electrode-film junctions.
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