Alternate Title

Large low field magnetoresistance in La0.67Sr0.33MnO₃ nanowire devices

Abstract

Large low field magnetoresistance (LFMR) of about 28% is observed in La0.67Sr0.33MnO3 nanowires with 80 nm in diameter at T = 300 K. A gradual decrease in the LFMR has been found with increase in wire diameter. The LFMR drops to zero for wires above 280 nm in diameter. The nanowires are grown by means of electrospinning process and exhibit distorted orthorhombic crystal structure. The large LFMR is considered as a grain boundary effect as observed in several perovskite systems. The large LFMR observed in these manganites with reduced dimensions may be useful for room temperature device applications.

Notes

Published in: J. Appl. Phys. 109, 016109 (2011); doi:10.1063/1.3493693

Keywords

magnetoresistance, nanofabrication

Subject Categories

Electrospinning, Grain boundaries, Lanthanum compounds, Nanowires, Strontium compounds

Disciplines

Physics

Publisher

American Institute of Physics

Publication Date

1-10-2011

Rights Information

© 2011 American Institute of Physics

Rights Holder

American Institute of Physics

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fig1.zip (2420 kB)
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fig3.zip (144 kB)
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fig4.zip (117 kB)
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