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Influence of chemical disorder on electrical switching in chalcogenide glasses

Narayanan, Aravinda R and Asokan, S and Kumar, A (2001) Influence of chemical disorder on electrical switching in chalcogenide glasses. In: Phtsical Review B, 63 (9). 092203-1.

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We report the results of the electrical switching and thermal studies performed on the bulk $Al_{20}Ge_xTe_{80-x}$ chalcogenide glasses which are a sequel to similar experiments on the $Al_{20}As_xTe_{80-x}$ glasses to ascertain the role of the crosslinking elements Ge and As in memory and threshold switching glasses. Anomalously large switching fields are seen for relatively smaller crystallization temperatures contradicting the thermal model for memory switching phenomenon. The present findings when viewed in conjunction with the data on other glassy alloys suggest that chemical ordering, the well known topological feature in chalcogenide glasses, influences the type of switching. A simple chemical bond and electronic band picture is developed to comprehend the results.

Item Type: Journal Article
Publication: Phtsical Review B
Publisher: American Institute Of Physics
Additional Information: Copyright of this article belongs to American Institute Of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Jun 2006
Last Modified: 19 Sep 2010 04:29
URI: http://eprints.iisc.ac.in/id/eprint/7551

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