A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FERRITE SINTERED MAGNET
The present invention provides a ferrite sintered magnet comprising ferrite crystal grains having a hexagonal structure, wherein the ferrite sintered magnet comprises metallic elements at an atomic ratio represented by formula (1). In formula (1), R is at least one element selected from the group consisting of Bi and rare-earth elements, and R comprises at least La. In formula (1), w, x, z and m satisfy formulae (2) to (5). The above-mentioned ferrite sintered magnet further has a coefficient of variation of a size of the crystal grains in a section parallel to a c axis of less than 45%.Ca1-w-xRwSrxFezCom (1)0.360≤w≤0.420 (2)0.110≤x≤0.173 (3)8.51≤z≤9.71 (4)0.208≤m≤0.269 (5)
FERRITE SINTERED MAGNET
The present invention provides a ferrite sintered magnet comprising ferrite crystal grains having a hexagonal structure, wherein the ferrite sintered magnet comprises metallic elements at an atomic ratio represented by formula (1). In formula (1), R is at least one element selected from the group consisting of Bi and rare-earth elements, and R comprises at least La. In formula (1), w, x, z and m satisfy formulae (2) to (5). The above-mentioned ferrite sintered magnet further has a coefficient of variation of a size of the crystal grains in a section parallel to a c axis of less than 45%.Ca1-w-xRwSrxFezCom (1)0.360≤w≤0.420 (2)0.110≤x≤0.173 (3)8.51≤z≤9.71 (4)0.208≤m≤0.269 (5)
FERRITE SINTERED MAGNET
ISHIKURA TOMOKAZU (author) / IKEDA MASANORI (author) / MURAKAWA YOSHITAKA (author) / MORITA HIROYUKI (author) / MUROYA SHOGO (author)
2021-03-25
Patent
Electronic Resource
English
FERRITE SINTERED MAGNET PRODUCING METHOD AND FERRITE SINTERED MAGNET
| European Patent Office | 2018
MANUFACTURING METHOD OF FERRITE SINTERED MAGNET AND FERRITE SINTERED MAGNET
| European Patent Office | 2018