AB
A. Brockhoff
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1
Journal article
(1997)
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S. Freisem, A. Brockhoff, D. G. De Groot, B. Dam, J. Aarts
We report on the magnetic and transport properties of thin films of La0.67Ca0.33MnO3 as a function of annealing temperature, substrate material and film thickness. The films were sputtered from a stoichiometric target with the same nominal composition and were grown epitaxially on SrTiO3 and LaAlO3 substrates. We find a clear correlation between the ferromagnetic ordering temperature TM and the magnitude of the magnetoresistance ratio (MR ratio). Also, TM appears to be extremely sensitive to the preparation conditions: within the one composition investigated, TM could be made to vary between 125 K and 255 K.
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We report on the magnetic and transport properties of thin films of La0.67Ca0.33MnO3 as a function of annealing temperature, substrate material and film thickness. The films were sputtered from a stoichiometric target with the same nominal composition and were grown epitaxially on SrTiO3 and LaAlO3 substrates. We find a clear correlation between the ferromagnetic ordering temperature TM and the magnitude of the magnetoresistance ratio (MR ratio). Also, TM appears to be extremely sensitive to the preparation conditions: within the one composition investigated, TM could be made to vary between 125 K and 255 K.