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Vapor Deposition by Liquid Phase Sputtering

 

作者: R. C. Krutenat,   W. R. Gesick,  

 

期刊: Journal of Vacuum Science and Technology  (AIP Available online 1970)
卷期: Volume 7, issue 6  

页码: 40-44

 

ISSN:0022-5355

 

年代: 1970

 

DOI:10.1116/1.1315917

 

出版商: American Vacuum Society

 

数据来源: AIP

 

摘要:

Liquid binary alloy targets have been sputtered at ion densities of up to100 W/cm2providing deposition rates in excess of 10 mils/h in a combined sputtering-evaporation mode. At high power densities a serf-sputtering mode has been demonstrated which allows deposition from10−7to10−2Torr. Comparison of sputtered deposit compositions of Pb-24 In, Fe-30 V and Fe-32 Ni with theoretical molar ratios predicted on the basis of thermal vaporization shows that alloy fractionation is substantially reduced. The composition of deposits from solid or liquid Pb-24 In targets had nearly the same Pb/In ratio,5.8 (target ratio= 1.75)although the predicted ratio for thermalized vapor was 1300. For Fe-30 V liquid targets where less than 0.5% vanadium is predicted from thermal vaporization alone, a sputtered deposit containing 10.3% vanadium was found, suggesting that the approximate sputtering/evaporation ratio is 0.3. Liquid phase targets of Fe-32 Ni alloy had average molar ratios of Fe/Ni close to 3 (target ratio was 2.2), whereas the predicted ratio from thermal vaporization was 5.8. There was only a slight increase in Fe/Ni ratio in the self-sputtering mode at10−6Torr over that obtained with argon sputtering at10−3Torr.

 

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