Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1993-06-15
1996-07-30
Nguyen, Nam
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
20419215, 20419217, C23C 1434
Patent
active
055408206
ABSTRACT:
A method of forming a thin film by a bias sputtering method using a first target made of a refractory metal mainly composed of W and a second target made of a conductive material mainly composed of a low-melting-point metal which comprises, upon sputtering the first target made of the refractory metal mainly composed of W, decreasing high energy particles incident to a substrate in a state where a desired bias voltage is applied to a substrate thereby forming a thin film of the refractory metal mainly composed of W with low resistivity and less stress and, subsequently, upon sputtering the second target made of the conductive material mainly composed of the low-melting-point metal, accelerating the growth of crystals in a state where a desired voltage is applied to a substrate thereby forming in lamination a thin film of the conductive material mainly composed of the low-melting-point metal with a large crystal grain size on the thin film made of the refractory metal mainly composed of W.
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Journal of Applied Physics, vol. 16, #1, "Thin Films Deposited by Bias Sputtering"--Maissel and Schaible.
Applied Surface Science 38 (1989) 295-303 "Stresses in Sputtered Tungsten Thin Films", CNRS, Laboratoire de Microstructure et de Microelectronique.
Saito Hiroshi
Sasaki Shinji
Terakado Masatomo
Hitachi , Ltd.
Nguyen Nam
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