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

Akira Sasaki; Makoto Nakanishi; Tatsuo Fujii; Jun Takada

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 proceeding › Conference 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 language	English
Title of host publication	Electroceramic Materials and Applications - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology
Pages	497-503
Number of pages	7
Publication status	Published - Dec 1 2006
Event	6th Pacific Rim Conference on Ceramic and Glass Technology - Maui, Hawaii, United States Duration: Sep 11 2005 → Sep 16 2005

Publication series

Name	Ceramic Transactions
Volume	196
ISSN (Print)	1042-1122

Other

Other	6th Pacific Rim Conference on Ceramic and Glass Technology
Country	United States
City	Maui, Hawaii
Period	9/11/05 → 9/16/05

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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Preparation of Z-type hexagonal ferrite, Co₂Z, using alkaline mali de method. / Sasaki, Akira; Nakanishi, Makoto ; Fujii, Tatsuo; Takada, Jun.

Electroceramic Materials and Applications - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology. 2006. p. 497-503 (Ceramic Transactions; Vol. 196).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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. Ceramic Transactions, vol. 196, pp. 497-503, 6th Pacific Rim Conference on Ceramic and Glass Technology, Maui, Hawaii, United States, 9/11/05.

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

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.",

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N2 - 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.

AB - 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.

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