| 摘要 |
<p>Disclosed is an interdispersed two-phase ferrite composite which comprises a spinel phase having the general formula MFe2O4, wherein M is at least one element that forms a spinel ferrite, and a magnetoplumbite phase having the general formula RxP1-xFe12O19, wherein R is lanthanum, neodymium, praseodymium, samarium, europium, or a mixture of two or more thereof, P is strontium, barium, calcium, lead, or a mixture of two or more thereof, and x has a value of 0.1 to 0.4. The composite has a spinel phase: magnetoplumbite phase molar ratio of 1:25 to 10:25. Also disclosed is a carrier formed from magnetized and polymerically coated particles of the composite and an electrographic developer formed from such a carrier and a toner.</p> |
