Muanghlua, Rangson

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Muanghlua, Rangson
Alternative Name
Muanghlua, R.
Muanghlua, Rangsan
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Email
rangson.mu@kmitl.ac.th

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    Item type:Publication,
    Fine Grain BaTiO3-Co0.5Ni0.5Fe2O4 Ceramics Prepared by the Two-Stage Sintering Technique
    (2015-10-30)
    Pulphol, Nattakarn
    ;
    Muanghlua, Rangson
    ;
    Niemcharoen, Surasak
    ;
    Vittayakorn, Naratip
    ;
    Vittayakorn, Wanwilai
    This work investigated the improvement of density and controllable grain size of multiferroic ceramics by using the system of (0.8)BaTiO<inf>3</inf>-(0.2)Co<inf>0.5</inf>Ni<inf>0.5</inf>Fe<inf>2</inf>O<inf>4</inf> nanocomposites via the two-stage sintering technique. The sintering process was divided into two steps. Firstly, samples were fired at the optimized temperature of T<inf>1</inf> to activate grain boundary migration in order to obtain an initial high density. Secondly, the samples were cooled immediately to the temperature of T<inf>2</inf> and soaked at various times to enable dense ceramics without grain growth. All of the samples were characterized by an X-ray diffractometer, and the results confirmed that all samples were composite ceramics. Scanning electron microscopy showed the grain size of all the samples and proved that the two-stage sintering technique achieved fine grain ceramics when compared with traditional sintering. Electrical properties of all the samples were investigated using an LCR meter at room temperature to 200°C with various frequencies, and magnetic properties were characterized by a vibrating sample magnetometer.