FERRITE

PROBLEM TO BE SOLVED: To provide a MnZn-based ferrite suitable for absorption and inhibition of electromagnetic noise in high frequency band.SOLUTION: For making ferrite having high impedance at high frequency band of 350 kHz or more, relative magnetic permeability μ'' is needed to be enha...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUZAWA MANABU, YASUOKA TERUO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE ELECTRICITY INDUCTANCES INORGANIC CHEMISTRY LIME, MAGNESIA MAGNETS METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SLAG TRANSFORMERS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a MnZn-based ferrite suitable for absorption and inhibition of electromagnetic noise in high frequency band.SOLUTION: For making ferrite having high impedance at high frequency band of 350 kHz or more, relative magnetic permeability μ'' is needed to be enhanced at such high frequency band and a structure having uniform crystal particle diameter is prepared by adjusting the BiOcontent to be small and making σ/X representing heterogeneity of crystal particle diameter small for the purpose.SELECTED DRAWING: None 【課題】高周波数帯域で、電磁ノイズの吸収及び抑制に適したＭｎＺｎ系のフェライトの提供をすること。【解決手段】３５０ｋＨｚ以上の高周波数帯域でインピーダンスの高いフェライトとするには、その高周波数帯域で虚部比透磁率μ''を高める必要があり、そのためには、Ｂｉ２Ｏ３含有量を少なく調整し、結晶粒径の不均一さを示すσ／Ｘを小さくし、結晶粒径の均一な組織とする。【選択図】なし