Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

Chih Hao Lee, Hsin Ho Chang, Hui Chia Su, Yu Han Wu, Chih Wei Hu, L. J. Chang, A. Ioffe, K. Bussmann, Th Brückel

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The magnetic correlation length of a mixed nickel ferrite powder was studied by a newly commissioned depolarized neutron beamline at the W3 port of Tsing Hua Open Pool Reactor (THOR). In this work, Ni ferrite powder samples with different packing densities were studied. The magnetic correlation lengths of the sample were observed to be 2 μm at virgin state and about 3.1 μm at remanent state from the packing density of 20-60%. This magnetic domain size is smaller than particle size. No significant change of domain size at this packing density implies the domain wall motion is hindered by the porosity effectively up to at least 60% of packing density.

原文English
頁(從 - 到)2565-2567
頁數3
期刊Physica B: Condensed Matter
404
發行號17
DOIs
出版狀態Published - 2009 9月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程

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