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Charge transport in hierarchical α-Fe2O3 nanostructures
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View: Figures


Image of FIG. 1.
FIG. 1.

EBID based device fabrication of α-Fe2O3 nanorods (a) nano-T, (b) nano-I, (c) nano-X, (d) nano-Y. The channel lengths of nano-T, nano-I, nano-X, and nano-Y are 915, 375, 1300, and 600 nm, respectively, along their conducting paths.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Current-voltage characteristics of the fabricated hierarchical structures of α-Fe2O3. (b) A plot of I vs. V2: SCLC regime in the nanojunctions of α-Fe2O3 following the power law with α = 2.

Image of FIG. 3.
FIG. 3.

(Color online) Trends of mobilities and resistivities of α-Fe2O3 nanojunctions with respective channel length of the α-Fe2O3 nanorods. Inset: variation of onset voltage of SCLC with the ratio of radius-channel length of α-Fe2O3 nanorods.

Image of FIG. 4.
FIG. 4.

(Color online) Transmission electron micrographs of α-Fe2O3 nanojunction (a) low magnification image of the nanojunction (b) High magnification image suggesting its polycrystalline nature. (c) HR-TEM image of the nanojunction with the directions of individual nanorods; inset: FFT of a grain at the junction.

Image of FIG. 5.
FIG. 5.

(Color online) Nyquist plot of nano-I and nano-X at frequencies 100-1 kHz. Inset: the equivalent circuit model used for fitting the corresponding Nyquist plots of nano-I and nano-X.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Charge transport in hierarchical α-Fe2O3 nanostructures