Title:
ＭｎＺｎＮｉＣｏ系フェライトおよびその製造方法
Document Type and Number:
Japanese Patent JP7470081
Kind Code:
B2
Abstract:
To provide a MnZnNiCo-based ferrite material that has a small absolute value of iron loss in a wide temperature range of a room temperature to 100°C when driving at high frequency of 500 kHz while maintaining high saturation magnetic flux density until a transformer operation temperature (approximately 80°C) in a high-density loading state, in order to downsize a power supply of an electronic component and increase the performance thereof.SOLUTION: A MnZnNiCo-based ferrite material comprises: Fe2O3, ZnO, NiO, CoO and manganese oxide as fundamental components; and SiO2, CaO and Nb2O5 of predefined amounts with respect to the fundamental components, as accessory components. In addition, an amount of Cl, Sr and Ba each is suppressed to a predefined amount or less with respect to the fundamental components, and sintering density of the MnZnNiCo-based ferrite material is defined in the range of more than 4.85 Mg/m3 and 5.00 Mg/m3 or less.SELECTED DRAWING: None
Inventors:
Naoki Soga
Yukiko Nakamura
Yukiko Nakamura
Application Number:
JP2021070672A
Publication Date:
April 17, 2024
Filing Date:
April 19, 2021
Export Citation:
Assignee:
JFE Chemical Corporation
International Classes:
C04B35/38; C01G49/00; H01F1/34; H01F41/02
Domestic Patent References:
| JP2019199378A | ||||
| JP2019006668A | ||||
| JP2000286119A | ||||
| JP2006290632A | ||||
| JP2017145152A | ||||
| JP10284316A | ||||
| JP2002231520A |
Attorney, Agent or Firm:
Kenji Sugimura
Keisuke Kawahara
Keisuke Kawahara