Title:
Ｎｉ系フェライトおよびそれを用いたコイル部品
Document Type and Number:
Japanese Patent JP7338183
Kind Code:
B2
Abstract:
To provide Ni-based ferrite which has a large initial magnetic permeability μi and a small relative temperature coefficient, which becomes negative in a temperature range of 20-120°C, and a coil component arranged by use thereof.SOLUTION: A Ni-based ferrite has an initial magnetic permeability μi of 465 or more at 20°C, of which the relative temperature coefficient is -3.0×10-6/°C to 0/°C in a temperature range of 20-85°C and -2.0×10-6/°C to 0/°C in a temperature range of 20-120°C. The Ni-based ferrite comprises: Fe2O3 of 47.0 mol% to 47.5 mol%; ZnO of 28.0 mol% to 32.0 mol%; CuO of 6.0 mol% to 9.0 mol%; MnO of 0.3 mol% to 1.2 mol% with the balance consisting of NiO, wherein the total quantity of Fe2O3 and MnO is 47.5 mol% to 48.2 mol%.SELECTED DRAWING: Figure 2
Inventors:
Satoshi Tanaka
Norikazu Koyubara
Norikazu Koyubara
Application Number:
JP2019051779A
Publication Date:
September 05, 2023
Filing Date:
March 19, 2019
Export Citation:
Assignee:
Proterial Co., Ltd.
International Classes:
H01F1/34; C01G53/00; C04B35/30; H01F17/04
Domestic Patent References:
| JP2006282437A | ||||
| JP6140229A | ||||
| JP2005306668A | ||||
| JP10101410A | ||||
| JP2002289420A | ||||
| JP2002289421A | ||||
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Foreign References:
| WO2018230426A1 | ||||
| WO2009081984A1 | ||||
| KR1020120115810A | ||||
| CN102690109A | ||||
| CN102690110A |