Hits:

Indexed by:期刊论文

Date of Publication:2011-05-01

Journal:JOURNAL OF SOLID STATE CHEMISTRY

Included Journals:SCIE、EI

Volume:184

Issue:5

Page Number:1165-1171

ISSN No.:0022-4596

Key Words:Fe-doped MnO2; High magnetic field; Electromagnetic properties

Abstract:Fe-doped MnO2 with a hollow sea urchin-like ball chain shape was first synthesized under a high magnetic field of 10 T. The formation mechanism was investigated and discussed in detail. The synthesized samples were characterized by XRD, SEM, TEM, EMPA, and vector network analysis. By doping MnO2 with Fe, the relative complex permittivity of MnO2 and its corresponding loss tangent clearly decreases, but its relative complex permeability and its corresponding loss tangent markedly increases. Moreover, the theoretically calculated values of reflection loss show that with increasing the Fe content, the as-prepared Fe-doped MnO2 exhibits good microwave absorption capability. (C) 2011 Elsevier Inc. All rights reserved.