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Effect of BaCu(B2O5) additions on the sintering behaviors and dielectric-magnetic properties of Co2Z hexaferrite

Published online by Cambridge University Press:  26 August 2015

Panpan Chang ,
Li He  and
Hong Wang
Panpan Chang
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an 710049, China
Li He
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an 710049, China
Hong Wang*
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an 710049, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this study, BaCu(B2O5) (BCB) is utilized as the sintering aids to decrease the sintering temperature of Ba3(Co0.4Zn0.6)2Fe24O41 [(Co0.4Zn0.6)2Z]. The influence of BCB addition on the microstructures as well as the dielectric and magnetic properties of the (Co0.4Zn0.6)2Z ceramic samples is investigated. It is found that the 5 wt% BCB added (Co0.4Zn0.6)2Z sintered at 925 °C exhibits both a high relative density of about 95% and a homogeneous microstructure with few pores existing. Both the relative permittivity and permeability of the sample keep stable from 10 to 800 MHz. Also, the dielectric and magnetic loss are low and effectively suppressed within a wide frequency range. For the specimen with 5 wt% BCB, the dielectric and magnetic loss tangent are 0.003 and 0.039 at 200 MHz, respectively. In addition, a compatibility test with Ag powders has been carried out. The optimized properties indicate that this kind of low temperature sintered Z-type hexaferrite is a good candidate for the applications of multilayer chip inductors.

Keywords

dielectric propertiesmagnetic propertiesceramic
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 18 , 28 September 2015 , pp. 2747 - 2752
Copyright
Copyright © Materials Research Society 2015 

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