Magnetic properties of some opal-based nanocomposites

M. K. Lee, E. V. Charnaya, C. Tien, M. I. Samoilovich, L. J. Chang, V. M. Mikushev

研究成果: Article

3 引文 斯高帕斯(Scopus)

摘要

Nanoparticles of complex titanium, cobalt, and manganese oxides with ilmenite and spinel structure have been synthesized in pores of an opal. The particle composition has been determined by X-ray diffraction analysis. The magnetic properties of the obtained nanocomposites with different particles embedded in pores have been studied. The temperature dependences of the dc and ac magnetizations in the range from 2 to 300 K have been measured. It has been shown that the magnetic ordering in all the nanocomposites studied emerges at temperatures above 150 K, which not in all cases can be related directly to the properties of the materials identified by X-ray diffraction. The appearance of peaks in the ZFC susceptibility and ac magnetization curves below 50 K is assigned to disordering and frustration in nanoparticles of titanates of the type of CoTiO3, NiTiO3, and Co2TiO4.

原文English
頁(從 - 到)629-633
頁數5
期刊Physics of the Solid State
55
發行號3
DOIs
出版狀態Published - 2013 三月 19

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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