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

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3910

Lastpage

3911

Abstract

Thin films of perovskite-like (La,Ca)MnO_δ 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)MnO_δ; post-annealing; Annealing; Colossal magnetoresistance; Electric resistance; Giant magnetoresistance; Magnetic field measurement; Sputtering; Substrates; Temperature; Transistors; X-ray diffraction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489813

Filename

489813