Please use this identifier to cite or link to this item:
|Title:||Low-frequency noise in La0.7Sr0.3Mn1-xFexO3 thin films|
|Citation:||Han, K.-H., Huang, Q., Ong, P.C., Ong, C.K. (2002-07-08). Low-frequency noise in La0.7Sr0.3Mn1-xFexO3 thin films. Journal of Physics Condensed Matter 14 (26) : 6619-6625. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/14/26/302|
|Abstract:||The low-frequency noise in epitaxial La0.7Sr0.3Mn1-xFexO3 thin films with x = 0, 0.08 and 0.12 has been studied as a function of magnetic field (up to 1500 G). At zero external magnetic field (B = 0 G), there is no appreciable peak in the normalized noise power spectral density (PSD) for x = 0 thin films; however, a peak does appear for x = 0.08 and 0.12 thin films near the metal-insulator transition temperature (Tp), which is below the Curie temperature. Unlike the resistivity, the noise PSD does not change with the doping level (x) at B = 0 G; however, at B = 1500 G the noise PSD decreases with x. At a low external magnetic field of B < 1500 G, there is no or a small thermal hysteresis in the noise PSD for all three differently doped samples; however, at B = 1500 G there appears a large thermal hysteresis for all samples. The contribution of magnetic domain fluctuations is a possible origin for the noise PSD.|
|Source Title:||Journal of Physics Condensed Matter|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 20, 2019
WEB OF SCIENCETM
checked on Mar 5, 2019
checked on Nov 23, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.