Preparation of Z-type hexagonal ferrite, Co2Z, using alkaline mali de method

Akira Sasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, low temperature preparation conditions for Co2Z (3BaO·2CoO·12Fe2O3) particles were investigated by using alkaline halide method. The obtained particles were characterized by using X-ray diffraction and scanning electron microscopy techniques. Many factors such as the metal compositions, heating temperature, heating and cooling rates, and amount of flux reagents were changed for the preparation. The X-ray diffraction analysis indicated that (1) the metal compositions, (2) flux reagent, and (3) heating rate were important to obtain Co2Z at low temperature using the alkaline halide method. Nearly monophasic Co2Z was formed under the following conditions: metal compositional ratio of Ba : Co: Fe = 3.0 : 1.5 : 24 with 10wt% BaCl2 flux and rapid heating to 1200 °C for 6 hours. Co2Z powders mixed with an EPDM rubber were pressed to a sheet form. The electromagnetic properties of rubber sheets were examined to apply to use as an electromagnetic wave absorber.

Original languageEnglish
Title of host publicationElectroceramic Materials and Applications - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology
Pages497-503
Number of pages7
Publication statusPublished - Dec 1 2006
Event6th Pacific Rim Conference on Ceramic and Glass Technology - Maui, Hawaii, United States
Duration: Sep 11 2005Sep 16 2005

Publication series

NameCeramic Transactions
Volume196
ISSN (Print)1042-1122

Other

Other6th Pacific Rim Conference on Ceramic and Glass Technology
CountryUnited States
CityMaui, Hawaii
Period9/11/059/16/05

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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    Sasaki, A., Nakanishi, M., Fujii, T., & Takada, J. (2006). Preparation of Z-type hexagonal ferrite, Co2Z, using alkaline mali de method. In Electroceramic Materials and Applications - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology (pp. 497-503). (Ceramic Transactions; Vol. 196).