The influence of interfaces on the formation of bubbles in He-ion-irradiated Cu/Mo nanolayers |
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| Authors: | Nan Li J.J. Carter A. Misra L. Shao H. Wang |
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| Affiliation: | 1. Department of Mechanical Engineering, and Materials Science and Engineering Program , Texas A&2. M University , College Station, TX 77843-3123, USA;3. Materials Physics and Application Division, Los Alamos National Laboratory , Los Alamos, NM 87545, USA;4. Department of Nuclear Engineering , Texas A&5. M University , College Station, TX 77843-3133, USA;6. Materials Physics and Application Division, Los Alamos National Laboratory , Los Alamos, NM 87545, USA;7. Department of Electrical and Computer Engineering , Texas A&8. M University , College Station, TX 77843-3128, USA |
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| Abstract: | The role of immiscible Cu/Mo interfaces on the formation of helium (He) bubbles in ion-irradiated Cu/Mo 5?nm multilayers is examined. Interfaces significantly enhance the critical He concentration above which bubbles, approximately 1?nm in diameter, are detected via through-focus imaging in a transmission electron microscope. He-to-vacancy ratio affects the formation and distribution of He bubbles. The diameter of He bubbles in Cu appears to be slightly larger than that in Mo. |
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| Keywords: | ion irradiation Cu/Mo multilayers He bubbles interfaces |
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