Title :
Annealing effect on the giant magnetoresistance of La-Ca-Mn-O thin films
Author :
Zeng, X.T. ; Wong, H.K.
Author_Institution :
Dept. of Phys., Chinese Univ. of Hong Kong, Shatin, Hong Kong
fDate :
11/1/1995 12:00:00 AM
Abstract :
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
Keywords :
annealing; calcium compounds; ferromagnetic materials; giant magnetoresistance; lanthanum compounds; magnetic epitaxial layers; magnetoresistance; sputtered coatings; (001) orientation; (100) MgO substrates; La-Ca-Mn-O; La-Ca-Mn-O thin films; MgO; annealing effect; as-deposited films; epitaxial film; facing-target sputtering technique; ferromagnetic film; giant magnetoresistance; high electrical resistivity; low field giant magnetoresistance; perovskite-like (La,Ca)MnOδ; post-annealing; Annealing; Colossal magnetoresistance; Electric resistance; Giant magnetoresistance; Magnetic field measurement; Sputtering; Substrates; Temperature; Transistors; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
