Physics – Condensed Matter – Materials Science
Scientific paper
2005-10-07
Physics
Condensed Matter
Materials Science
15 pages. Accepted for publication in Appl. Phys. Lett
Scientific paper
10.1063/1.2130383
We report measurements of the optical responses of a La2/3Sr1/3MnO3 (LSMO) sample at a wavelength of 533 nm in the 300-400 K range. The 200 nm thick film was grown by pulsed laser deposition on (100) SrTiO3 substrate and showed remarkably low noise. At 335 K the temperature coefficient of the resistance of a 100 micrometers wide 300 micrometers long LSMO line was 0.017 K-1 and the normalized Hooge parameter was 9 e-30 m3, which is among the lowest reported values. We then measured an optical sensitivity at I = 5 mA of 10.4 V.W-1 and corresponding noise equivalent power (NEP) values of 8.1 e-10 W.Hz-1/2 and 3.3 e-10 W. Hz-1/2 at 30 Hz and above 1kHz, respectively. Simple considerations on bias current conditions and thermal conductance G are finally given for further sensitivity improvements using LSMO films. The performances were indeed demonstrated on bulk substrates with G of 10-3 W.K-1. One could expect a NEP reduction by three orders of magnitude if a membrane-type geometry was used, which makes this LSMO device competitive against commercially available uncooled bolometers.
Chakalov Radoslav A.
Flament Stephane
Guillet Bruno
Mechin Laurence
Robbes Didier
No associations
LandOfFree
Uncooled bolometer response of a low noise La2/3Sr1/3MnO3 thin film does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Uncooled bolometer response of a low noise La2/3Sr1/3MnO3 thin film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uncooled bolometer response of a low noise La2/3Sr1/3MnO3 thin film will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-561734