US 12,142,406 B2
Ferrite sintered body and wire-wound coil component
Yuuki Kitadai, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Sep. 27, 2021, as Appl. No. 17/486,808.
Claims priority of application No. 2020-170015 (JP), filed on Oct. 7, 2020.
Prior Publication US 2022/0108820 A1, Apr. 7, 2022
Int. Cl. H01F 1/34 (2006.01); C04B 35/26 (2006.01); H01F 17/04 (2006.01); H01F 27/29 (2006.01)
CPC H01F 1/344 (2013.01) [C04B 35/265 (2013.01); H01F 17/045 (2013.01); H01F 27/292 (2013.01); Y10T 428/32 (2015.01)] 8 Claims
OG exemplary drawing
 
1. A ferrite sintered body, comprising:
from 45.0% by mole to 49.7% by mole Fe in terms of Fe2O3;
from 2.0% by mole to 8.0% by mole Cu in terms of CuO;
from 25.0% by mole to 45.0% by mole Ni in terms of NiO; and
from 1.0% by mole to 20.0% by mole Zn in terms of ZnO,
wherein the Fe, Cu, Ni, and Zn are converted to Fe2O3, CuO, NiO, and ZnO, respectively, and taking the total amount of the Fe2O3, the CuO, the NiO, and the ZnO as 100 parts by weight, the ferrite sintered body further comprises from 5 ppm to 25 ppm B in terms of elemental B and from 6 ppm to 25 ppm Nb in terms of elemental Nb.