Microwave dielectric properties of nanostructured nickel ferrite

Bulletin of materials science

John Jacob¹  K T Mathew²  M Abdul Khadar¹  Anil Lonappan² 

[1] Department of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Department of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, IndiaDepartment of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$;Department of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Centre for Nanoscience and Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Department of Electronics, Cochin University of Science and Technology, Kochi 682 022, India$$Department of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, IndiaDepartment of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Centre for Nanoscience and Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Department of Electronics, Cochin University of Science and Technology, Kochi 682 022, India$$Centre for Nanoscience and Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, IndiaDepartment of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Centre for Nanoscience and Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Department of Electronics, Cochin University of Science and Technology, Kochi 682 022, India$$Department of Electronics, Cochin University of Science and Technology, Kochi 682 022, IndiaDepartment of Physics, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Centre for Nanoscience and Nanotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695 581, India$$Department of Electronics, Cochin University of Science and Technology, Kochi 682 022, India$$

关键词: Nickel ferrite;    nanostructured;    microwave dielectric;    co-precipitation.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nickel ferrite is one of the important ferrites used in microwave devices. In the present work, we have synthesized nanoparticles of nickel ferrite using chemical precipitation technique. The crystal structure and grain size of the particles are studied using XRD. The microwave dielectric properties of nanostructured nickel ferrite samples of three different average grain sizes and those of two sintered samples were studied. The parameters like dielectric constant, dielectric loss and heating coefficient of the nanoparticles samples are studied in the frequency range from 2.4 to 4 GHz. The values of these parameters are compared with those of sintered pellets of the same samples. All these parameters show size dependent variations.

【 授权许可】

Unknown