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Morphological Evolution, Growth Mechanism, and Magneto-Transport Properties of Silver Telluride One-Dimensional Nanostructures

Morphological Evolution, Growth Mechanism, and Magneto-Transport Properties of Silver Telluride One-Dimensional Nanostructures

Gaomin Li, Xiaobing Tang, Shaomin Zhou, Ning Li, Xianyou Yuan

Nanoscale Res Lett. 2013 Aug 20;8(1):356.

PMID: 23958372

Abstract:

Single crystalline one-dimensional (1D) nanostructures of silver telluride (Ag2Te) with well-controlled shapes and sizes were synthesized via the hydrothermal reduction of sodium tellurite (Na2TeO3) in a mixed solution. The morphological evolution of various 1D nanostructures was mainly determined by properly controlling the nucleation and growth process of Ag2Te in different reaction times. Based on the transmission electron microscopy and scanning electron microscopy studies, the formation mechanism for these 1D nanostructures was rationally interpreted. In addition, the current-voltage (I-V) characteristics as a function of magnetic field of the highly single crystal Ag2Te nanowires were systematically measured. From the investigation of I-V characteristics, we have observed a rapid change of the current in low magnetic field, which can be used as the magnetic field sensor. The magneto-resistance behavior of the Ag2Te nanowires with monoclinic structure was also investigated. Comparing to the bulk and thin film materials, we found that there is generally a larger change in R (T) as the sample size is reduced, which indicates that the size of the sample has a certain impact on magneto-transport properties. Simultaneously, some possible reasons resulting in the observed large positive magneto-resistance behavior are discussed.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12002992	Silver(I) telluride		12002-99-2	Price

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