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http://dx.doi.org/10.5757/JKVS.2007.16.6.433

The effect of annealing temperature and Ta layer on the electric conductivity of Au thin film deposited by the magnetron sputtering  

Choi, Hyeok-Cheol (Department of Physics, Inha University)
You, Chun-Yeol (Department of Physics, Inha University)
Publication Information
Journal of the Korean Vacuum Society / v.16, no.6, 2007 , pp. 433-438 More about this Journal
Abstract
We fabricated thin films of Au and Ta/Au with thicknesses of 30 nm and 5 nm/30nm, respectively on Si(100) or Si(111) substrates using a dc magnetron sputtering system. Grain sizes, roughness and conductivity for Au thin films are measured as a function of the annealing temperatures. We observed that the grain size of samples enlarged and the surface became rougher with increasing annealing temperature. The grain size and roughness were improved in the structure of Si/Ta/Au than Si/Au. Furthermore, the Si(100) substrate was more effective for decreasing the resistance for Ta/Au system than Si(111) substrate. We confirm that by inserting a Ta buffer layer in Si(100)/Au, surface roughness was reduced and by adjusting the annealing temperature the grain size were enlarged. Consequently, the Au thin-film has improved conductivity.
Keywords
Au thin-film; annealing; grain size; roughness; conductivity;
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