Magnetization and Microwave Absorption Properties of La0.67 Sr0.33 MnO3 with Different Particle Size

Yu Lan Cheng; Ping Xia; Ke Xiang Wei; Quan Bai

doi:10.4028/www.scientific.net/AMR.374-377.1541

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Magnetization and Microwave Absorption Properties of La_0.67 Sr_0.33 MnO₃ with Different Particle Size

Abstract:

La _0.67 Sr _0.33 MnO ₃ particles with different particle size have been prepared by sol-gel method. The structure, magnetization and microwave absorption properties have been investigated. The results show that the particle size can be controlled by sinter temperature. The peaks of the maximum reflection loss (RL) move to higher frequency regions with increasing particle size. The value of the maximum RL is -32 dB at 10.2GHz with a particle size of 58.5nm. The bandwidth with a RL exceeding -8dB reached 1.6GHz in the whole measured frequency range, suggesting that La _0.67 Sr _0.33 MnO ₃ particles are promising for application as a wideband and strong absorption building microwave absorber.