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Electrical and optical characterization of the metal-insulator transition temperature in Cr-doped VO2 thin films
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10.1063/1.4803551
/content/aip/journal/jap/113/17/10.1063/1.4803551
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803551

Figures

Image of FIG. 1.
FIG. 1.

MIT parameters of CrV O thin films measured via DC resistance. (a) Resistance transition of the  = 6.5% sample, indicating the hysteresis Δ . (b) Plot of –(log)/ vs. (heating) showing and δ . (c) Plot of as measured according to (b) as a function of Cr percentage for all samples measured in both heating and cooling.

Image of FIG. 2.
FIG. 2.

MIT parameters of CrV O thin films measured via infrared reflectance (2000 cm frequency). (a) Reflectance transition of the  = 8.7% sample plotted as reflectance at 2000 cm (normalized to a Ag mirror) against . The dashed line indicates the midpoint of the reflectance transition. The corresponding temperatures on the heating and cooling curves define define , and the interpolated width at the midpoint defines the hysteresis Δ . (b) Plot of as measured according to (a) as a function of Cr percentage for all samples measured in both heating and cooling.

Image of FIG. 3.
FIG. 3.

Carrier densities inferred from Hall voltage measurements for the Cr doped samples, plotted against temperature across the MIT.

Tables

Generic image for table
Table I.

Resistance phase transition parameters. , δ , and Δ are the MIT temperature, width, and hysteresis, respectively, for heating and cooling. Δ/ is the conductance contrast ratio between metallic and insulating phases. Δ/ is the relative change in carrier density between metallic and insulating phases, inferred from Hall effect data.

Generic image for table
Table II.

Reflectance transition parameters. , δ , and Δ are the MIT temperature, width, and hysteresis, respectively, measured by reflectivity. Δ is the reflectance contrast between metallic and insulating phases.

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/content/aip/journal/jap/113/17/10.1063/1.4803551
2013-05-02
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrical and optical characterization of the metal-insulator transition temperature in Cr-doped VO2 thin films
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803551
10.1063/1.4803551
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