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Effect of temperature and magnetic field on the electrical transport of polyaniline nanofibers
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10.1063/1.4793588
/content/aip/journal/jap/113/9/10.1063/1.4793588
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/9/10.1063/1.4793588

Figures

Image of FIG. 1.
FIG. 1.

(a) and (b) Representative HRTEM image of dispersed PANI nanofibers at two different magnifications. (c) HRTEM image of a nanofiber showing the periodic pattern of PANI chains at a distance of 0.35 nm. (d)Histogram of number fibers against fiber diameter.

Image of FIG. 2.
FIG. 2.

XRD patterns of the doped PANI nanofibers.

Image of FIG. 3.
FIG. 3.

Raman spectra of the PANI nanofibers at (a) low wavenumbers (100–1000 cm−1) and (b) high wavenumbers (1100–1700 cm−1).

Image of FIG. 4.
FIG. 4.

Log-log plots of temperature dependence of normalized conductivity of doped PANI nanofibers in the absence and in the presence of 8 T magnetic field.

Image of FIG. 5.
FIG. 5.

Log-log plots of W vs. T of PANI nanofibers in (a) zero and (b) 8 T magnetic field.

Image of FIG. 6.
FIG. 6.

lnσ vs. T −3/7 plots of doped PANI nanofibers in (a) zero and (b) 8 T magnetic field.

Image of FIG. 7.
FIG. 7.

MR of the PANI nanofiber samples at different temperatures.

Image of FIG. 8.
FIG. 8.

MR% (at B = 8 T) vs. temperature plot for C1, C2, and C3.

Image of FIG. 9.
FIG. 9.

Representative fitting of MR of the samples to Eq. (7) at 30 K and 300 K of (a) C1, (b) C2, and (c) C3.

Image of FIG. 10.
FIG. 10.

B 0 vs. T plot for C1, C2, and C3.

Tables

Generic image for table
Table I.

Assignments of Raman bands shown in Figs. 3(a) and 3(b) .

Generic image for table
Table II.

Parameters calculated from the conductivity data in the insulating regime.

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/content/aip/journal/jap/113/9/10.1063/1.4793588
2013-03-06
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of temperature and magnetic field on the electrical transport of polyaniline nanofibers
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/9/10.1063/1.4793588
10.1063/1.4793588
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