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Adv Mater. 2012 Jul 3;24(25):3396-400. doi: 10.1002/adma.201200707. Epub 2012 May 25.

Transparent nanoscale floating gate memory using self-assembled bismuth nanocrystals in Bi(2) Mg(2/3) Nb(4/3) O(7) (BMN) pyrochlore thin films grown at room temperature.

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1
Department of Materials and Engineering, Chungnam National University, Daeduk Science Town, 305-764, Daejeon, Korea.

Abstract

Bismuth nanocrystals for a nanoscale floating gate memory device are self-assembled in Bi(2) Mg(2/3) Nb(4/3) O(7) (BMN) dielectric films grown at room temperature by radio-frequency sputtering. The TEM cross-sectional image shows the "real" structure grown on a Si (001) substrate. The image magnified from the dotted box (red color) in the the cross-sectional image clearly shows bismuth nanoparticles at the interface between the Al(2) O(3) and HfO(2) layer (right image). Nanoparticles approximately 3 nm in size are regularly distributed at the interface.

PMID:
22628021
DOI:
10.1002/adma.201200707
[Indexed for MEDLINE]
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