TITLE

Evidence of the magnetoimpedance effect up to microwave frequencies in polycrystalline La0.7Sr0.3MnO3 films

AUTHOR(S)
Stanescu, D.; Xavier, P.; Richard, J.; Dubourdieu, C.
PUB. DATE
April 2006
SOURCE
Journal of Applied Physics;4/1/2006, Vol. 99 Issue 7, p073707
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present broadband measurements of the magnetoimpedance of polycrystalline La0.7Sr0.3MnO3 films grown on silicon as a function of three parameters: (i) the frequency (0–1 GHz), (ii) the temperature (4–275 K), and (iii) the applied magnetic field (0–6 T). In this paper it is evidenced that the magnetoresistive effect still exists up to 1 GHz. The impedance variation with the frequency is well modeled considering that the polycrystalline film is equivalent to a random resistive-capacitive network. Similar behaviors of the impedance versus temperature variation are observed in dc and high frequency range.
ACCESSION #
20517497

 

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