Title :
Effect of sintering conditions on resistivity and dielectric properties of Mn-Zn ferrites
Author :
Fano, W.G. ; Jacobo, S.E. ; Razzitte, A.C.
Author_Institution :
Dept. de Electron., Buenos Aires Univ., Argentina
Abstract :
Resistivity and dielectric properties of the Mn-Zn ferrite, MnxZn(1-x)Fe2O4, have been studied near different sintering conditions to optimize the sintering schedule for a specific application. Variable sintering parameters studied include sintering time from 2 h to 12 h duration at 1250°C. In view of the different applications of ferrites in the telecommunication field, this work is devoted to the study and the understanding of the transport mechanism in Mn-Zn ferrites in the kHz frequency range. Particles of Mn-Zn ferrite were synthetized by a new chemical coprecipitation method, that provided small particles (<0.5 μm), with very good magnetic properties. It is known that different factors contribute to the dielectric response, including densification of samples. Possible mechanisms contributing to conduction processes in ferrites are discussed
Keywords :
densification; dielectric losses; electrical resistivity; ferrites; magnetic particles; manganese compounds; permittivity; precipitation (physical chemistry); sintering; zinc compounds; 0.1 Hz to 100 kHz; 1250 C; 2 to 12 hour; Mn-Zn ferrite particles; Mn-Zn ferrites; MnxZn1-xFe2O4; MnZnFe2O4; chemical coprecipitation method; conduction process mechanisms; densification; dielectric properties; dielectric response; magnetic properties; resistivity; sintering conditions; sintering schedule optimization; sintering time; small particles; telecommunication field; transport mechanism; Atmosphere; Capacitors; Chemicals; Colon; Conductivity; Dielectric losses; Dielectric materials; Ferrites; Frequency; Permittivity;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.804648
