Synthesis of cARBON/Fe-Ni-Cu alloy composite by carbonization of organometallic polymers and their magnetic properties

Yukiko Uchida, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Akinori Muto, Yusaku Sakata

Research output: Contribution to journalConference article


Carbon/Fe-Ni-Cu alloy composites were synthesized by carbonization of organometallic polymers obtained from ion exchanged chelate resins. The carbonization was performed at 900 °C in a N2 gas flow. The composition of the Fe-Ni-Cu alloy in a carbon matrix can be controlled by the adjusting solution compositions in the ion exchange process. The carbon obtained from the organometallic polymer was crystallized to a turbostratic structure. X-ray diffraction patterns revealed that the Cu, Fe and Ni elements in the ion exchanged chelate resins were crystallized to a Fe-Ni-Cu alloy after carbonization at 900°C. This result indicates that the formation of the ternary alloy in the carbon matrix is coincident with the crystallization of the well-ordered turbostratic structure of the carbon matrix. The alloy particles with an average size of about 200-700 nm were widely dispersed in the carbon matrix. The saturation magnetization and coercivity of the composites depended on the alloy composition. The saturation magnetization and coercivity of the carbon/Fe0.52Ni0.42Cu0.06 alloy composite were 7.9 emu/g and 167 Oe, respectively.

Original languageEnglish
Pages (from-to)67-74
Number of pages8
JournalCeramic Transactions
Publication statusPublished - Jul 24 2006
Event6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 - Maui, HI, United States
Duration: Sep 11 2005Sep 16 2005


ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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