Magnetic properties of metal-ceramic composite core-shell structures synthesized using coprecipitation and heterocoagulation

M. Karmarkar, R. Islam, C. W. Ahn, J. T. Abiade, D. Kumar, D. Viehland, Shashank Priya

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

Abstract

This study reports room temperature synthesis and magnetic properties of metal-ceramic composite particles. The particles constitute a core-shell structure where the core is nickel-metal, while the shell is manganese zinc ferrite (MZF). Coprecipitation was used for synthesis of MZF nanoparticles comprising the shell, whereas nickel was synthesized by hydrazine assisted reduction of nickel ions in aqueous media. A core shell structure was then obtained by heterocoagulation to form a shell of MZF around the nickel particles. Electron microscopy and x-ray diffraction confirmed nickel cores coated by MZF shells. Magnetization studies of MZF nanoparticles revealed that they were not super-paramagnetic at room temperature, as expected for such particle sizes of 20nm in size. Sintered composites of metal-ceramic particles core-shell exhibited a magnetostriction of 5ppm.

Original languageEnglish (US)
Title of host publicationAdvances in Electronic Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites
Pages37-52
Number of pages16
Volume30
Edition9
StatePublished - May 13 2010
EventAdvances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
Duration: Jan 18 2009Jan 23 2009

Other

OtherAdvances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites
CountryUnited States
CityDaytona Beach, FL
Period1/18/091/23/09

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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    Karmarkar, M., Islam, R., Ahn, C. W., Abiade, J. T., Kumar, D., Viehland, D., & Priya, S. (2010). Magnetic properties of metal-ceramic composite core-shell structures synthesized using coprecipitation and heterocoagulation. In Advances in Electronic Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites (9 ed., Vol. 30, pp. 37-52)