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Annealing effect on the giant magnetoresistance of La-Ca-Mn-O thin films

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2 Author(s)
Zeng, X.T. ; Dept. of Phys., Chinese Univ. of Hong Kong, Shatin, Hong Kong ; Wong, H.K.

Thin films of perovskite-like (La,Ca)MnOδ with (001) orientation were grown epitaxially on (100) MgO substrates by a simple facing-target sputtering technique. The as-deposited films already possess a significant low field giant magnetoresistance. Further post-annealing experiments on these samples indicate that the high electrical resistivity is not a prerequisite of the giant magnetoresistance effect

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Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )