Compositions – Magnetic
Patent
1996-07-22
1998-06-02
Bonner, Melissa
Compositions
Magnetic
423599, 423593, 428692, G01R 3306
Patent
active
057594341
ABSTRACT:
The present invention provides a compound magnetoresistive material having a perovskite related structure and being represented by M1.sub.m M2.sub.n+1 M3.sub.n Z.sub.y, where: M1 is a first metal comprising at least one element selected from the group consisting of Tl, Bi, Pb, and Hg; M2 is a second metal comprising at least one element selected from the group consisting of alkaline earth metals; M3 is a third metal comprising at least one element selected from the group consisting of Mn, Os, and Ru; Z is one selected from the group consisting of oxygen and anions in which some oxygen elements are replaced by Oh, F, B, Cl, Br, S, Se and Te; m is equal to 1 or 2; 1.ltoreq.n.ltoreq.4; y is variable and depends upon a kind of elements constituting the perovskite related structure, a ratio of composition thereof, and synthesis conditions thereof.
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McKinnon et al, "Structure and Magnetism of Bi.sub.2 (Sr,Ca).sub.2 MnO.sub.6+y antiferromagnetics with ferrimagnetic layers", Phys. rev. B, vol. 41(7), pp. 4489-501, Mar. 1, 1990.
Kubo Yoshimi
Manako Takashi
Shimakawa Yuichi
Bonner Melissa
NEC Corporation
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