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IEICE TRANSACTIONS on Electronics

Low-Temperature Fabrication of Ion-Induced Ge Nanostructures: Effect of Simultaneous Al Supply

Ako MIYAWAKI, Toshiaki HAYASHI, Masaki TANEMURA, Yasuhiko HAYASHI, Tomoharu TOKUNAGA, Tetsuo SOGA

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Summary :

Ge surfaces were irradiated by Ar+ ions at 600 eV with and without simultaneous supply of Ge or Al at room temperature. The surfaces ion-irradiated without any simultaneous metal supply were characterized by densely distributed conical protrusions. By contrast, various kinds of nanostructures were formed on the Ge surfaces ion-irradiated with a simultaneous metal supply. They featured cones and nanobelts with a flattened top for Ge supply cases, whereas they were characterized by the nanorods, nanobelts and nanowalls for Al supply cases. Very interestingly, most of the nanorods and nanobelts formed with an Al supply possessed a bottleneck structure. Thus, the Ge nanostructures were controllable in morphology by species and amount of simultaneously supplied metals.

Publication
IEICE TRANSACTIONS on Electronics Vol.E92-C No.12 pp.1417-1420
Publication Date
2009/12/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E92.C.1417
Type of Manuscript
Special Section PAPER (Special Section on Nanomaterials and Nanodevices for Nanoscience and Nanotechnology)
Category
Nanomaterials and Nanostructures

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