Title :
Low temperature fired NiCuZn ferrite
Author :
Hsu, Jen-Yan ; Ko, Wen-Song ; Shen, Hon-Dar ; Chen, Chi-Jen
Author_Institution :
Mater. Res. Labs., Ind. Technol. Res. Inst., Hsinchu, Taiwan
fDate :
11/1/1994 12:00:00 AM
Abstract :
Bismuth oxide (Bi2O3) and lead glass were introduced to NiCuZn ferrite to reduce the sintering temperatures from more than 950°C to 875°C for co-firing with the internal conductor, Ag. Both additives formed liquid phases in grain boundaries during the sintering process to enhance the densification of the specimens. The chip inductors made of the Bi2O3 doped ferrite exhibited higher DC resistance than the un-doped formulation due to the intensified Ag diffusion by the aforementioned liquid phase
Keywords :
bismuth compounds; copper compounds; ferrites; grain boundaries; inductors; nickel compounds; sintering; zinc compounds; 950 to 875 C; Bi2O3 doped ferrite; NiCuZnFeO:Bi2O3; chip inductors; densification; grain boundaries; higher DC resistance; liquid phases; low temperature fired NiCuZn ferrite; sintering temperatures; Additives; Ball milling; Conducting materials; Ferrites; Glass; Magnetic materials; Magnetic multilayers; Powders; Temperature; Thick film inductors;
Journal_Title :
Magnetics, IEEE Transactions on
