MRS Proceedings

Table of Contents - Volume  384  - Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces  

Editors : A. Fert, H. Fujimori, G. Guntherodt, B. Heinrich, W.F. Egelhoff, Jr.

Articles

Colossal Magnetoresistance in Thick La0.7Ca0.3MnO3 Films

1995 MRS Spring Meeting.

Randolph E. Treecea1 p1, P. Dorseya1, M. Rubinsteina1, J. M. Byersa1, J. S. Horwitza1, E. Donovana1 and D. B. Chriseya1

a1 Naval Research Laboratory, Washington, DC 20375.

ABSTRACT

Thick films (0.6 and 2.0 μm) of the colossal magnetoresistance (CMR) material, La0.7Ca0.3MnO3 (LCMO), have been grown by pulsed laser deposition (PLD). The films were grown from single-phase LCMO targets in 100 mTorr 02 pressures and the material deposited on (100) LaAlO3 substrates at deposition temperatures of 800°C. The deposited films were characterized by X-ray diffraction (XRD), magnetic field-dependent resistivity, and Rutherford backscattering spectroscopy (RBS). The LCMO films were shown by XRD to adopt an orthorhombic structure. Brief post-deposition annealing led to ~50,000% and ~12,000% MR effect in the 0.6 μm and 2.0 μm films, respectively.

Correspondence:

p1 Present address: Department of Physics, University of Colorado, Boulder, Co 80309-0390.

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