FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Evolution of Residual Stress and Structure in YSZ/SiO2 Multilayers with Different Modulation Ratios |
XIAO Qi-Ling**, HU Guo-Hang, HE Hong-Bo, SHAO Jian-Da |
Key Laboratory of Materials for High Power Lasers, Chinese Academy of Sciences, PO Box 800-211, Shanghai 201800
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Cite this article: |
XIAO Qi-Ling, HU Guo-Hang, HE Hong-Bo et al 2013 Chin. Phys. Lett. 30 024206 |
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Abstract The multilayer (ML) YSZ/SiO2 films with different modulation ratios ranging from 1:3, 4:9, 1:1 to 3:1 (the thickness ratio of the YSZ to SiO2) are deposited on BK7 glass substrates by electron beam evaporation under the same processing conditions. The effect of modulation ratio on the residual stresses and structure are investigated by an optical interferometer and Grazing incidence x-ray diffraction. The results show that the total residual stress in MLs is compressive and decreases to tensile when the modulation ratio is changed from 1:3 to 3:1. The YSZ films are of cubic phase structure and the SiO2 films are amorphous in all the MLs. The change of residual stress in these MLs can be attributed to the variation of an individual layer?s stress with thickness, which indicates that adjusting the thickness ratio of two materials is an effective measure for depositing near-zero stress MLs.
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Received: 26 October 2012
Published: 02 March 2013
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