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Graphitic onions as reaction cells on the nanoscale
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10.1063/1.2202106
/content/aip/journal/apl/88/19/10.1063/1.2202106
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202106
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Iron crystal encapsulated in a graphitic shell. The Fe crystal is in the fcc phase and seen here in (110) projection. (a) Before irradiation, several twins on (111) planes are visible. (b) After of moderate electron irradiation, the graphitic shells are spherical and have deformed the Fe crystal so that the twins have vanished. Beam current density: approximately , specimen temperature: .

Image of FIG. 2.
FIG. 2.

The Fe crystal as shown in Fig. 1 transforms to . (a) After of irradiation, no crystalline contrast appears at the interface between the Fe crystal and the graphitic shells, indicating a disordered intermediate state. In the center, lattice fringes of , seen here in the (110) direction, appear. (b) After , the transformation into is almost complete. (c) after ; the size of the crystal remains constant whereas the graphitic shells are successively lost. A grain boundary has formed due to deformation. Irradiation parameters as in Fig. 1.

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/content/aip/journal/apl/88/19/10.1063/1.2202106
2006-05-11
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Graphitic onions as reaction cells on the nanoscale
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/19/10.1063/1.2202106
10.1063/1.2202106
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