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Advanced Materials

Switching of the Natural Nanostructure in Bi2Te3 Materials by Ion Irradiation

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Abstract

In Bi2Te3 materials the natural nanostructure (nns) with a wavelength of 10 nm can be reproducibly switched ON and OFF by Ar+ ion irradiation at 1.5 and 1 keV. Controlled formation of the nns in Bi2Te3 materials has potential for reducing its thermal conductivity and could increase the thermoelectric figure of merit.

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