Electrical phase change of Ga:La:S:Cu films
Simpson, R.E., Mairaj, A., Curry, R.J., Huang, C.C., Knight, K., Sessions, N., Hassan, M. and Hewak, D.W. (2007) Electrical phase change of Ga:La:S:Cu films. Electronics Letters, 43, (15), 830-831. (doi:10.1049/el:20071290).
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Ga:La:S:Cu films have been prepared by sputter deposition. Amorphous thin films were fabricated with Cu concentrations as high as 66 at.%. The electrical phase change properties of these films have been investigated. The electrical resistivity of these materials is 200 Ωm in the amorphous state and 40 Ωm in the crystalline state. The crystallisation time was measured using an optical pump probe method and confirmed to be 150 ns. The high resistivity of these films in both their crystalline and amorphous states allows low current, Joule, heating and therefore shows potential for the utilisation as the active layer in electrical phase change memory devices.
|Keywords:||Ga-La-S-Cu, amorphous state, amorphous thin films, crystallisation, electrical phase change, electrical resistivity, memory devices, optical pump probe method, sputter deposition|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||04 Aug 2008|
|Last Modified:||15 Oct 2013 13:30|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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