Polarization enhancement in compositionally graded vanadium doped bismuth titanate thin films
Data(s) |
15/06/2010
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Resumo |
Compositionally up and downgraded Bi4-x/3Ti3-xVxO12 (x=0.0, 0.012,0.03, 0.06) thin films were grown on Pt coated silicon substrates by pulsed laser deposition technique. Downgraded fabrication showed improved ferroelectric polarization in comparison to upgraded fabrication. Films deposited at 650 and 700 degrees C showed very large remnant polarization (2P(r)) value of 82 mu C cm(-2), which is comparatively large among all bismuth based thin films reported so far. A mechanism based on vanadium enrich seeded layer formation in the downgraded structure is proposed for the improvement. Moreover, frequency independent behavior (100Hz-5kHz) of the graded films ensures its potential application for various microelectronic devices. (c) 2010 American Institute of Physics. [doi :10.1063/1.3431543]. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/31210/1/graded.pdf Chakraborty, Pradip and Krupanidhi, SB (2010) Polarization enhancement in compositionally graded vanadium doped bismuth titanate thin films. In: Journal of Applied Physics, 107 (12). |
Publicador |
American Institute of Physics |
Relação |
http://jap.aip.org/japiau/v107/i12/p124105_s1 http://eprints.iisc.ernet.in/31210/ |
Palavras-Chave | #Materials Research Centre |
Tipo |
Journal Article PeerReviewed |