Banerjee, Sourish ; Bhattacharya, Santanu ; Chakravorty, Dipankar (2007) Resistivity hysteresis of Ag2S nanocomposites Journal of Physical Chemistry C, 111 (36). pp. 13410-13413. ISSN 1932-7447
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp073814b
Related URL: http://dx.doi.org/10.1021/jp073814b
Abstract
A low-temperature chemical synthesis route was used to prepare Ag2S 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 Ag2S particle sizes.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 7273 |
| Deposited On: | 25 Oct 2010 11:53 |
| Last Modified: | 20 Jun 2012 11:34 |
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