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Browse Journals & Magazines > Applied Physics Letters ...> Volume:87 Issue:8 Help

Low-frequency 1/f-noise in (La0.7Sr0.3MnO3)0.95:(MgO)0.05 nanocomposite films

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5 Author(s)
Esseling, M. ; I. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany ; Moshnyaga, V. ; Samwer, K. ; Marx, A.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2034117 

The (La0.7Sr0.3MnO3)0.95:(MgO)0.05 nanocomposite system (LSMO:MgO) shows a low-field magnetoresistance up to 30% at low temperatures. The low-frequency 1/f-noise was investigated extensively to characterize the LSMO/MgO interface. The noise was found to be independent of both an applied magnetic field and the bias current. Furthermore, the temperature dependence of the noise level shows a maximum which can be connected to the temperature dependence of the resistance. The measured noise level is comparable to epitaxial manganite systems without doped grain boundaries. This suggests that the quality of the coherent LSMO/MgO interfaces where the low-frequency noise is predominantly generated is very high.

Published in:
Applied Physics Letters  (Volume:87 ,  Issue: 8 )

Date of Publication: Aug 2005

Page(s):
082509 - 082509-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2034117
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Aug 2005

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