Abstract
The optical response in single-crystal films of La0.67Ca0.33MnOδ(LCMO) is examined as a function of bias current, temperature, incident laser power, and light modulation frequency. The LCMO thin films are deposited on (110) NdGaO3substrates via a facing-target sputtering method. The sample is irradiated by a He-Ne laser to demonstrate the bolometric effect. The incident light power is attenuated by inserting neutral density filters. The sample is biased with a dc current. The optical response voltage across the sample is recorded by a lock-in amplifier. For highly resistive samples, the resistance measurements are conducted with a high impedance electrometer, and the optical response signal is extracted across a load resistance in series with the sample.
Original language | English |
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Pages (from-to) | 1810-1812 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 79 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Feb 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy
- Physics and Astronomy (miscellaneous)