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Controlled synthesis and electromagnetic performance of hollow microstructures assembled of tetragonal MnO2 nano-columns.
- Source :
-
Journal of Applied Physics . Apr2012, Vol. 111 Issue 8, p084109. 8p. 2 Black and White Photographs, 2 Diagrams, 2 Charts, 4 Graphs. - Publication Year :
- 2012
-
Abstract
- Hollow microstructures assembled of tetragonal MnO2 nano-columns have been synthesized through a facile hydrothermal method with the introduction of iron ions. The obtained samples were characterized by XRD, SEM, and vector network analysis. Results reveal that the presence of Fe3+ ions leads to transformation of phase structure from α-MnO2 to a mixture of &eh;-MnO2 and α-MnO2, and it is essential to include Fe3+ ions for the formation of the hollow MnO2 microstructures. The formation mechanism was investigated and proposed in detail. Fe-doped MnO2 exhibits decreased dielectric loss, but increased magnetic loss compared with the pure one. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MICROSTRUCTURE
*IRON ions
*METAL ions
*MICROMECHANICS
*DIELECTRIC loss
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 111
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 74668423
- Full Text :
- https://doi.org/10.1063/1.4705516