Room temperature high conduction state in annealed Ca-substituted yttrium iron garnet films

Author

Turpin, G.B. ; Song, Y.J. ; Wigen, P.E.

Author_Institution

Dept. of Phys., Ohio State Univ., Columbus, OH, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3835

Lastpage

3837

Abstract

It was discovered that the application of a constant DC field (~10 ⁴ V/cm) at room temperature for several days reversed the changes in the electrical properties produced by thermal annealing in Ca:YIG single crystal films. The electrical conductivity of these films improved by five to seven orders of magnitude during this process to values as much as ten times greater than those of the as-grown state. After the field was removed this new high conduction state was found to be stable. The rate of conductivity increase became exponentially smaller when either the applied field or the temperature were decreased

Keywords

annealing; calcium; electrical conductivity; garnets; magnetic epitaxial layers; semiconductor epitaxial layers; semiconductor materials; yttrium compounds; 20 C; Ca:YIG single crystal films; YFe5O12:Ca; YIG:Ca; annealed Ca-substituted yttrium iron garnet films; constant DC field; electrical conductivity; electrical properties; high conduction state; p-type semiconductor; room temperature; room temperature high conduction state; thermal annealing; Annealing; Conductivity; Garnet films; Iron; Magnetic devices; Magnetic properties; Magnetic semiconductors; Optical films; Temperature; Yttrium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489788

Filename

489788