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Technique for anisotropic extension of organic crystals: Application to temperature dependence of electrical resistance
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10.1063/1.2777191
/content/aip/journal/rsi/78/8/10.1063/1.2777191
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/8/10.1063/1.2777191
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Sample bar and extension jig made from Stycast 1266. (b) Sample bar installed into the extension jig.

Image of FIG. 2.
FIG. 2.

The relationships between the stress and the electrical resistance of the strain gauge (filled circle), and the strain and the electrical resistance of the strain gauge (open diamond) for the sample bar made from Stycast 1266. The resistances of the gauge under ambient pressure at are (a) 120 and (b) .

Image of FIG. 3.
FIG. 3.

(Color online) Poisson effect for the sample bar made from Stycast 1266. Open diamonds (filled circles) denote the extension (contraction) along the parallel (perpendicular) direction.

Image of FIG. 4.
FIG. 4.

Time dependence of the electrical resistance during the polymerization of the sample bar. The sample bar is made from Stycast 1266. (a) , (b) strain gauge: FLG-120, and (c) strain gauge: CFLG-350.

Image of FIG. 5.
FIG. 5.

Temperature dependence of the electrical resistance of the strain gauges, (a) FLG-120 and (b) CFLG-350, in the sample bar. The solid and broken lines denote Stycast 1266 and 2850FT, respectively.

Image of FIG. 6.
FIG. 6.

A schematic view of the organic layer of . The open arrows denote the direction of the anisotropic extension.

Image of FIG. 7.
FIG. 7.

Temperature dependence of the electrical resistance of in the sample bar with the extension jig made from Stycast 1266.

Image of FIG. 8.
FIG. 8.

Schematic views of the organic layers of . The anisotropic extension is applied along the crystallographic axis.

Image of FIG. 9.
FIG. 9.

(a) Temperature dependence of the electrical resistance of in the sample bar with the extension jig made from Stycast 1266. The inset shows the temperature dependences normalized with the resistance at . (b) Temperature dependence of the electrical resistance under a magnetic field at . The resistance is normalized with that at . The broken line shows the electrical resistance under ambient pressure at .

Image of FIG. 10.
FIG. 10.

Schematic views of the organic chains and the coordination geometry of . The open arrows denote the direction of the anisotropic extension.

Image of FIG. 11.
FIG. 11.

(Color) Temperature dependence of the electrical resistance of in the sample bar with the extension jig made from Stycast 1266. (a) Cooling process. (b) Heating process.

Image of FIG. 12.
FIG. 12.

Temperature dependence of the electrical resistance of in the sample bar, which is loosely fixed to the extension jig. The sample bar and the extension jig are made from Stycast 1266.

Image of FIG. 13.
FIG. 13.

(Color) Temperature dependence of the electrical resistance of in the sample bar made from Stycast 2850FT. (a) Cooling process. (b) Heating process.

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/content/aip/journal/rsi/78/8/10.1063/1.2777191
2007-08-30
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Technique for anisotropic extension of organic crystals: Application to temperature dependence of electrical resistance
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/8/10.1063/1.2777191
10.1063/1.2777191
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