NICKEL ZINC-BASED FERRITE: Fid-Bau Portal

NICKEL ZINC-BASED FERRITE

TANAKA SATOSHI

To provide a NiZn-based ferrite which is superior in productivity, and which can suppress the increase in changing rate of a complex relative permeability to a temperature.SOLUTION: A NiZn-based ferrite comprises Fe of 47.50 mol% or more and 48.60 mol% or less in terms of Fe2O3, Zn of 29.00 mol% or more and 30.10 mol% or less in terms of ZnO, Cu of 5.50 mol% or more and 6.50 mol% or less in terms of CuO, and Ni of 14.80 mol% or more and 18.00 mol or less in terms of NiO. Supposing that the total quantity of Fe2O3, ZnO, NiO and CuO is 100 mol%, and the total quantities of Fe, Zn, Ni and Cu as primary components are 100 pts.mass in terms of Fe2O3, ZnO, NiO and CuO respectively, Mn is 0.250 pt.mass or less in terms of Mn3O4, Ca is 0.025 pt.mass or more and 0.250 pt.mass or less in terms of CaO, and Si is 0.050 pt.mass in terms of SiO2.SELECTED DRAWING: None

【課題】生産性に優れ、温度に対する複素比透磁率の変化率の増加を抑制可能なＮｉＺｎ系フェライトを提供する。【解決手段】ＮｉＺｎ系フェライトは、Ｆｅ２Ｏ３換算で４７．５０ｍｏｌ％以上４８．６０ｍｏｌ％以下のＦｅ、ＺｎＯ換算で２９．００ｍｏｌ％以上３０．１０ｍｏｌ％以下のＺｎ、ＣｕＯ換算で５．５０ｍｏｌ％以上６．５０ｍｏｌ％以下のＣｕ、ＮｉＯ換算で１４．８０ｍｏｌ％以上１８．００ｍｏｌ％以下のＮｉからなり、Ｆｅ２Ｏ３、ＺｎＯ、ＮｉＯ、ＣｕＯの合計量が１００ｍｏｌ％であって、Ｆｅ、Ｚｎ、Ｎｉ、Ｃｕの合計量をそれぞれＦｅ２Ｏ３、ＺｎＯ、ＮｉＯ、ＣｕＯ換算で主成分１００質量部としたとき、ＭｎがＭｎ３Ｏ４換算で０．２５０質量部以下、ＣａがＣａＯ換算で０．０２５質量部以上０．２５０質量部以下、ＳｉがＳｉＯ２換算で０．０５０質量部である。【選択図】なし

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