Tdk Corporation

Tatsuya Katoh

Takahiro Mori

Hiroyuki Morita

Yoshihiko Minachi

Shigeki Yanagida

Nobuhiro Suto

A ferrite magnet and a ferrite sintered magnet including a ferrite magnetic material are provided. A main phase of the ferrite magnetic material includes a ferrite phase having a hexagonal crystal structure, and metal element composition expressed by Ca1-w-x-yR wSr xBayFezMm wherein 0.25&#x3c;w&#x3c;0.5, 0.01&#x3c;x&#x3c;0.35, 0.0001&#x3c;y&#x3c;0.013, y&#x3c;x, 8.7&#x3c;z&#x3c;9.9, 1.0&#x3c;w/m&#x3c;2.1, 0.017&#x3c;m/z&#x3c;0.055 and Si component is at least included as a sub-component, and wherein; when content y1 mass % of the Si component in the ferrite magnetic material, with respect to SiO2, is shown on Y-axis and a total content x1 of z and m is shown on X-axis, a relation between x1 and y1 is within a range surrounded by 4 points placed on X-Y coordinate having the X and Y axes.

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Tokyo, Japan

Tatsuya Katoh