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Crystallographic and Magnetic Properties of Li0.7Co0.2Ti0.2V0.2Fe1.7O4 Ferrite
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  • Crystallographic and Magnetic Properties of Li0.7Co0.2Ti0.2V0.2Fe1.7O4 Ferrite
  • Crystallographic and Magnetic Properties of Li0.7Co0.2Ti0.2V0.2Fe1.7O4 Ferrite
저자명
Chae. Kwang-Pyo,Kwon. Woo-Hyun,Lee. Jae-Gwang
간행물명
Journal of magnetics
권/호정보
2010년|15권 1호|pp.25-28 (4 pages)
발행정보
한국자기학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

This study examined the crystallographic and magnetic properties of vanadium-substituted lithium cobalt titanium ferrite, $Li_{0.7}Co_{0.2}Ti_{0.2}V_{0.2}Fe_{1.7}O_4$. Ferrite was synthesized using a conventional ceramic method. The samples annealed below $1040^{circ}C$ showed X-ray diffraction peaks for spinel and other phases. However, the sample annealed above $1040^{circ}C$ showed a single spinel phase. The lattice constant of the sample was $8.351;{AA}$, which was relatively unaffected by vanadium-substitution. The average grain size after vanadium-substitution was $13.90;{mu}m$, as determined by scanning electron microscopy. The M$ddot{o}$ssbauer spectrum could be fitted to two Zeeman sextets, which is the typical spinel ferrite spectra of $Fe^{3+}$ with A and B sites, and one doublet. From the absorption area ratio of the M$ddot{o}$ssbauer spectrum, the cation distribution was found to be ($Co_{0.2}V_{0.2}Fe_{0.6})[Li_{0.7}Ti_{0.2}Fe_{1.1}]O_4$. Vibrating sample magnetometry revealed a saturation magnetization and coercivity of 36.9 emu/g and 88.6 Oe, respectively, which were decreased by vanadium-substitution.