4.6 Article

Microstructure and metal-dielectric transition behaviour in a percolative Al2O3-Fe composite via selective reduction

Journal

RSC ADVANCES
Volume 3, Issue 48, Pages 26110-26115

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra45253k

Keywords

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Funding

  1. National Natural Science Foundation of China [51172131]
  2. Program for New Century Excellent Talents in University [NCET-10-518]
  3. Provincial Science and Technology Development Project of Shandong [2007GG10003007, 2007BS04032]
  4. Independent Innovation Foundation of Shandong University [IIFSDU-2010JQ002, GIIFSDU-YYX10011]

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The electromagnetic (EM) medium plays a key role in many areas, such as communications, stealth technology, etc. Different EM properties are required for different applications. In this paper, we have obtained tunable EM properties in an Al2O3-Fe composite via selective reduction. By adjusting the content of one functional component, the composite shows totally different EM properties, in accordance with the predictions of effective medium theory. Hybrid EM behaviour is obtained near the percolation threshold, which has a close relationship with its microstructure.

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