Please use this identifier to cite or link to this item:
|Title:||Ac magnetotransport in La0.7Sr0.3Mn 0.95Fe0.05O3 at low dc magnetic fields|
|Authors:||Barik, S.K. |
|Citation:||Barik, S.K., Mahendiran, R. (2011-12). Ac magnetotransport in La0.7Sr0.3Mn 0.95Fe0.05O3 at low dc magnetic fields. Solid State Communications 151 (24) : 1986-1989. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ssc.2011.09.007|
|Abstract:||We report the ac electrical response of La0.7Sr 0.3Mn1-xFexO3(x=0.05) as a function of temperature, magnetic field (H) and frequency of radio frequency (rf) current (f=0.120MHz). The ac impedance (Z) was measured while rf current directly passes through the sample as well as in a coil surrounding the sample. It is found that with increasing frequency of the rf current, Z(T) shows an abrupt increase accompanied by a peak at the ferromagnetic Curie temperature. The peak decreases in magnitude and shifts down with increasing value of H. We find a magnetoimpedance of ΔZZ=-21% for ΔH=500Oe at f=1MHz around room temperature when the rf current flows directly through the sample and ΔZZ=-65.9% when the rf current flows through a coil surrounding the sample. It is suggested that the magnetoimpedance observed is a consequence of suppression of transverse permeability which enhances skin depth for current flow. Our results indicate that the magnetic field control of high frequency impedance of manganites is more useful than direct current magnetoresistance for low-field applications© 2011 Elsevier B.V. All rights reserved.|
|Source Title:||Solid State Communications|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 17, 2018
WEB OF SCIENCETM
checked on May 9, 2018
checked on Feb 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.