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In-situ extended energy-loss fine structure analysis of the solid and liquid phases in sub-micron Al particles
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10.1063/1.3662382
/content/aip/journal/jap/110/10/10.1063/1.3662382
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/10/10.1063/1.3662382
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) EXELFS analysis of a pure Al particle at room temperature. (a) Raw Al L2,3 and L1 edges after background subtraction and plural scattering removal. (b) Isolated EXELFS modulation converted to the k-space. (c) RDF obtained by Fourier transforming the plot in (b).

Image of FIG. 2.
FIG. 2.

(Color online) First nearest-neighbor (bond-length) distance vs temperature during heating of Al. (a) First peak in the RDF at different temperatures. (b) First nearest-neighbor distance as a function of temperature. The dashed line is included to emphasize the increasing trend with temperature.

Image of FIG. 3.
FIG. 3.

(Color online) Analysis of Debye-Waller factor at high temperatures. (a) Isolated EXELFS modulations converted to k-space at different temperatures. (b) The mean-square displacement for the first atomic shell as a function of temperature calculated from a correlated Debye-model (Refs. 27 and 28) (c) FWHM of the first RDF peak as a function of temperature. The vertical dashed line indicates the equilibrium melting temperature of pure Al (660 °C).

Image of FIG. 4.
FIG. 4.

(Color online) First nearest-neighbor distance vs temperature during heating and supercooling of liquid Al. The inverse plasmon energy (i.e., inverse valence electron density) is plotted as a function of temperature for comparison (from Ref. 18). The direction of heating and cooling are indicated by arrows. The measurement errors associated with the inverse plasmon energy and the first nearest-neighbor distance are ±16 eV−1 and ± 0.05 Å, respectively, during heating and cooling across the melting temperature.

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/content/aip/journal/jap/110/10/10.1063/1.3662382
2011-11-28
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: In-situ extended energy-loss fine structure analysis of the solid and liquid phases in sub-micron Al particles
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/10/10.1063/1.3662382
10.1063/1.3662382
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