4.6 Article

Hexagonal BaTiO3/Ni0.8Zn0.2Fe2O4 composites with giant dielectric constant and high permeability

Journal

MATERIALS CHEMISTRY AND PHYSICS
Volume 134, Issue 2-3, Pages 777-782

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.03.068

Keywords

Composites; Dielectric properties; Magnetic properties; Sintering

Funding

  1. NSFC projects of China [60871044, 61025002, 50902090]
  2. National 973-project of China [2009CB623302]
  3. International S&T Cooperation Program of China [2009DFA51820]

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Hexagonal BaTiO3/Ni0.8Zn0.2Fe2O4 (BT/NZO) composites were synthesized by solid-state reaction method. Phase composition, microstructure, dielectric and magnetic properties of the composites were investigated. The BT/NZO composites had giant dielectric constants and very high permeabilities simultaneously. According to Cole-Cole plots, the composites showed a polydispersive nature of the Maxwell-Wagner relaxation. The forming mechanism of hexagonal BaTiO3 in the composites was also investigated. (c) 2012 Elsevier B.V. All rights reserved.

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