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Enhanced Microwave Absorption Properties of Intrinsically Core/shell Structured La0.6Sr0.4MnO3 Nanoparticles

Cheng, Y. L. and Dai, J. M. and Zhu, X. B. and Wu, D. J. and Yang, Z. R. and Sun, Y. P. (2009) Enhanced Microwave Absorption Properties of Intrinsically Core/shell Structured La0.6Sr0.4MnO3 Nanoparticles. Nanoscale Research Letters, 4 (10). pp. 1153-1158.

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Official URL: http://www.springerlink.com/content/71587247177504...

Abstract

The intrinsically core/shell structured La0.6Sr0.4MnO3 nanoparticles with amorphous shells and ferromagnetic cores have been prepared. The magnetic, dielectric and microwave absorption properties are investigated in the frequency range from 1 to 12 GHz. An optimal reflection loss of −41.1 dB is reached at 8.2 GHz with a matching thickness of 2.2 mm, the bandwidth with a reflection loss less than −10 dB is obtained in the 5.5–11.3 GHz range for absorber thicknesses of 1.5–2.5 mm. The excellent microwave absorption properties are a consequence of the better electromagnetic matching due to the existence of the protective amorphous shells, the ferromagnetic cores, as well as the particular core/shell microstructure. As a result, the La0.6Sr0.4MnO3 nanoparticles with amorphous shells and ferromagnetic cores may become attractive candidates for the new types of electromagnetic wave absorption materials.

Item Type:Article
Uncontrolled Keywords:La0.6Sr0.4MnO3 nanoparticles - Core/shell structure - Microwave absorption - Electromagnetic matching
Subjects:Physical Science > Nanophysics
Physical Science > Nanoelectronics
Physical Science > Nanomagnetics
ID Code:7138
Deposited By:Lesley Tobin
Deposited On:12 Nov 2009 15:24
Last Modified:12 Nov 2009 15:24

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