ISSN 0004-881X

Preparation and Magnetic Properties of Porous MnZn ferrite from Wood Template

by Sia Chee Kiong^1,2*, Daimu Mutou ¹,Nobuyasu Adachi¹,Toshitaka Ota¹

1) Ceramic Research Laboratory, Nagoya Institute of Technology, 10-6-29 Asahigaoka, Tajimi, Gifu, 507-0071, Japan
2) Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400, Batu Pahat, Johor, Malaysia

Abstract

Porous MnxZn1-xFe₂O₄ where x = 0.1, 0.5 and 0.9 was prepared from wood templates and magnetic properties were investigated. Cedar and Balsa wood with different size of pores were use as a template. The wood templates were infiltrated with Mn, Zn and Fe nitrate slurry and then sintered at 1200 degC for 10h in argon atmosphere to prevent segregation of a -Fe₂O₃. XRD pattern revealed that single phase of ferrite formed. The original shape and the microstructure of wood retained. The sintered bodies were one- directional elongated pores as wood structure. These shape caused the unequal magnetization at parallel and perpendicular directions. The coercivity in perpendicular with pores orientation was larger than that in parallel with pores orientation. The parallel direction of pores was easily magnetized.

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