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US 2011/0031434 A1Published application
Multiferroic material and method of manufacturing the same
AssigneeSnu R&Db Foundation
InventorsKee-Hoon Kim, Yisheng Chai, Sae-Hwan Chun
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Abstract
The present invention relates to a multiferroic material capable of freely controlling magnetic field size at room temperature, and to a method of manufacturing the same. Said multiferroic material includes hexaferrites containing magnetic iron ions partially substituted by non-magnetic ions. Said non-magnetic ions act to change the magnetic anisotropy of said hexaferrites.
Claims36
A method for manufacturing a multiferroic material, the method comprising:
- providing powders that selectively include barium carbonate powder, strontium carbonate powder, zinc oxide powder, iron oxide powder, aluminum oxide powder and sodium oxide powder;
- heat treating the powders one or more times;
- and
- providing crystallized hexaferrite by slowly cooling the powders.
1 more element
A multiferroic material comprising:
- a hexaferrite in which a magnetic iron ion is partially substituted by a nonmagnetic ion,
- wherein the nonmagnetic ion is applied so as to change the magnetic anisotropic property of hexaferrite.
Dependencies are inferred from the claim text.