Magnetic doped perovskite oxides

Details Magnetic doped perovskite oxides Magnetic doped perovskite oxides

2004-04-21

2009-10-06

Koslow, C. Melissa (Department: 1793)

Compositions

Magnetic

C501S135000, C501S138000

Reexamination Certificate

active

07597817

ABSTRACT:
Novel metal oxide compositions are disclosed. These ferromagnetic or ferrimagnetic compositions have resitivities that vary between those of semiconducting and insulating materials, and they further exhibit Curie temperatures greater than room temperature (i.e., greater than 300 K). They are perovskite structures with the general chemical formulas (A1-xMx)BO3, (A1-xMx)(B′B″)O3or A(B1-xMx)O3, where A can be a 1+, 2+and 3+charged ion; B can be a 5+, 4+, 3+charged ion; B′ and B″ can be 2+, 3+, 4+, 5+and 6+charged ion. M is a magnetic ion dopant. X-ray diffraction patterns are presented for exemplary compositions.

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