Resistivity hysteresis of Ag2S nanocomposites

Sourish Banerjee; Santanu Bhattacharya; Dipankar Chakravorty

doi:10.1021/jp073814b

Resistivity hysteresis of Ag₂S nanocomposites

Sourish Banerjee, Santanu Bhattacharya, Dipankar Chakravorty

Cancer Biology

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12 Scopus citations

Abstract

A low-temperature chemical synthesis route was used to prepare Ag ₂S particles with diameters ranging from 3 to 39 nm within a silica matrix. The dc electrical resistivity was measured in the temperature range of 320-460 K. A drastic reduction in resistivity around 450 K was caused by an order-disorder transition of Ag₂S. The specimens exhibited a hysteresis in resistivity as a function of temperature. The width of the hysteresis was related to the particle size, viz., it increased with an increase in particle size. This is believed to arise due to a reduction in interfacial free energy for crystal formation in the cation sublattice for smaller Ag ₂S particle sizes.

Original language	English (US)
Pages (from-to)	13410-13413
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	36
DOIs	https://doi.org/10.1021/jp073814b
State	Published - Sep 13 2007

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "A low-temperature chemical synthesis route was used to prepare Ag 2S particles with diameters ranging from 3 to 39 nm within a silica matrix. The dc electrical resistivity was measured in the temperature range of 320-460 K. A drastic reduction in resistivity around 450 K was caused by an order-disorder transition of Ag2S. The specimens exhibited a hysteresis in resistivity as a function of temperature. The width of the hysteresis was related to the particle size, viz., it increased with an increase in particle size. This is believed to arise due to a reduction in interfacial free energy for crystal formation in the cation sublattice for smaller Ag 2S particle sizes.",

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AU - Chakravorty, Dipankar

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N2 - A low-temperature chemical synthesis route was used to prepare Ag 2S particles with diameters ranging from 3 to 39 nm within a silica matrix. The dc electrical resistivity was measured in the temperature range of 320-460 K. A drastic reduction in resistivity around 450 K was caused by an order-disorder transition of Ag2S. The specimens exhibited a hysteresis in resistivity as a function of temperature. The width of the hysteresis was related to the particle size, viz., it increased with an increase in particle size. This is believed to arise due to a reduction in interfacial free energy for crystal formation in the cation sublattice for smaller Ag 2S particle sizes.

AB - A low-temperature chemical synthesis route was used to prepare Ag 2S particles with diameters ranging from 3 to 39 nm within a silica matrix. The dc electrical resistivity was measured in the temperature range of 320-460 K. A drastic reduction in resistivity around 450 K was caused by an order-disorder transition of Ag2S. The specimens exhibited a hysteresis in resistivity as a function of temperature. The width of the hysteresis was related to the particle size, viz., it increased with an increase in particle size. This is believed to arise due to a reduction in interfacial free energy for crystal formation in the cation sublattice for smaller Ag 2S particle sizes.

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Resistivity hysteresis of Ag₂S nanocomposites

Abstract

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