DocumentCode
848136
Title
Variable-temperature MFM/EFM study of (La1-xPrx)0.67Ca0.33MnO3 thin films
Author
Chung, S.H. ; Shinde, S.R. ; Ogale, S.B. ; Biswas, A. ; Venkatesan, T. ; Greene, R.L. ; Dreyer, M. ; Dottellis, J.B. ; Millis, A. ; Gomez, R.D.
Author_Institution
Dept. of Phys., Maryland Univ., College Park, MD, USA
Volume
38
Issue
5
fYear
2002
fDate
9/1/2002 12:00:00 AM
Firstpage
2886
Lastpage
2888
Abstract
Both ferromagnetic (FM) and charge-ordered domain structures of (La1-xPrx)0.67Ca0.33MnO3 thin film were detected by magnetic force microscopy (MFM) and electric force microscopy (EFM) operated at low temperatures near the peak resistance temperature (Tp). The in-plane-like FM domains of submicrometer size emerge below Tp, and their magnetic interaction with an MFM tip becomes stronger as the temperature is reduced. Charge-ordered insulating regions have the strong electrostatic interaction with an EFM tip near Tp, and the interaction correlates well with the temperature dependence of resistivity of the film.
Keywords
atomic force microscopy; calcium compounds; charge-ordered states; colossal magnetoresistance; ferromagnetic materials; lanthanum compounds; magnetic domains; magnetic force microscopy; magnetic thin films; praseodymium compounds; (LaPr)0.67Ca0.33MnO3; AFM; charge-ordered domain structures; colossal magnetoresistance; electric force microscopy; ferromagnetic domain structures; force gradients; insulator-metal transition; low temperatures; magnetic force microscopy; peak resistance temperature; perovskite manganite thin films; strong electrostatic interaction; temperature dependence; Atomic force microscopy; Colossal magnetoresistance; Conductivity; Magnetic films; Magnetic force microscopy; Magnetic forces; Pulsed laser deposition; Superconducting films; Temperature; Transistors;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2002.803165
Filename
1042399
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