Experimental and theoretical evidence of enhanced ferromagnetism in sonochemical synthesized BiFeO3 nanoparticles

Experimental and theoretical evidence of enhanced ferromagnetism in sonochemical synthesized BiFeO3 nanoparticles

BiFeO 3 nanoparticles were synthesized by a sonochemical method and their magnetic behavior was investigated both experimentally and theoretically. With an aid of ultrasonic irradiation, the saturated magnetization of BiFeO3 nanoparticles at room temperature was found to be increased effectively, fr...

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Veröffentlicht in:Applied physics letters 2010-12, Vol.97 (24)
Hauptverfasser: Fang, Liang, Liu, Jian, Ju, Sheng, Zheng, Fengang, Dong, Wen, Shen, Mingrong
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container_issue 24
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container_title Applied physics letters
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creator Fang, Liang
Liu, Jian
Ju, Sheng
Zheng, Fengang
Dong, Wen
Shen, Mingrong
description BiFeO 3 nanoparticles were synthesized by a sonochemical method and their magnetic behavior was investigated both experimentally and theoretically. With an aid of ultrasonic irradiation, the saturated magnetization of BiFeO3 nanoparticles at room temperature was found to be increased effectively, from 0.007 to 0.012 μB/Fe. The postannealing and x-ray photoemission spectroscopy results demonstrate that oxygen vacancies can be generated due to the ultrasonic irradiation and play an important role to increase the ferromagnetism. Our first-principles calculation results are in good agreement with the experimental observations.
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title Experimental and theoretical evidence of enhanced ferromagnetism in sonochemical synthesized BiFeO3 nanoparticles
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