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A platform for research: civil engineering, architecture and urbanism
FERRITE MAGNETIC MATERIAL
An object of the present invention is to provide a ferrite magnetic material capable of providing a permanent magnet in which high Br and HcJ are kept, and which has a high Hk/HcJ. A ferrite magnetic material in accordance with a preferred embodiment has a ferrite phase having a hexagonal structure and has a main composition represented by Ca 1-w-x-y R w Sr x Ba y Fe z M m O 19 (R is at least one element of rare earth elements (including Y) essentially including La, and Bi, and M is at least one element of Co, Mn, Mg, Ni, Cu, and Zn essentially including Co), where 0.25<2.5, and 0.017<0.065 are satisfied. The total amount of a Si component is 0.1 to 3 mass% based on the amount of the main composition, and respective elements satisfy the relationship of 1.5¤[(Ca+R+Sr+Ba)-(Fe+M)/12]/Si¤3.5.
FERRITE MAGNETIC MATERIAL
An object of the present invention is to provide a ferrite magnetic material capable of providing a permanent magnet in which high Br and HcJ are kept, and which has a high Hk/HcJ. A ferrite magnetic material in accordance with a preferred embodiment has a ferrite phase having a hexagonal structure and has a main composition represented by Ca 1-w-x-y R w Sr x Ba y Fe z M m O 19 (R is at least one element of rare earth elements (including Y) essentially including La, and Bi, and M is at least one element of Co, Mn, Mg, Ni, Cu, and Zn essentially including Co), where 0.25<2.5, and 0.017<0.065 are satisfied. The total amount of a Si component is 0.1 to 3 mass% based on the amount of the main composition, and respective elements satisfy the relationship of 1.5¤[(Ca+R+Sr+Ba)-(Fe+M)/12]/Si¤3.5.
FERRITE MAGNETIC MATERIAL
FERRITMAGNETISCHES MATERIAL
MATÉRIAU MAGNÉTIQUE À BASE DE FERRITE
NAGAOKA JUNICHI (author) / MORI TAKAHIRO (author) / MORITA HIROYUKI (author) / MINACHI YOSHIHIKO (author)
2017-04-05
Patent
Electronic Resource
English
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