Spin-dependent transport properties of oleic acid molecule self-assembled La0.7Sr0.3MnO3 nanoparticles
作者： L. Xi , J.H. Du , J.H. Ma , Z. Wang , Y.L. Zuo
DOI: 10.1016/J.JALLCOM.2012.10.126
关键词:
摘要: Abstract Spin-dependent transport property through molecules is investigated using a monolayer of oleic acid molecule self-assembled half metallic La 0.7 Sr 0.3 MnO 3 (LSMO) nanoparticles, which was synthesized coprecipitation method. Fourier transform infrared spectroscopy used to confirm that one-monolayer chemically bond the LSMO nanoparticles. The properties and magnetoresistance (MR) effect coated nanoparticles were measured by direct current four probes method Cu/nanoparticle assembly/elargol electrode sandwich device with various temperatures bias voltages. non-linear I – V curve indicates tunneling type properties. tunnel barrier height around 1.3 ± 0.15 eV obtained fitting according Simmons equation. curves can be divided high-field MR low-field (LFMR) parts. former ascribed influence spin disorder or canting within nanoparticle surface latter one strong dependence attributed spin-dependent insulating layer molecules. enhanced LFMR for respect bare weak scattering in barrier.
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sci-hub.se 参考文章(29)
Kebin Li, Rongsheng Cheng, Shouguo Wang, Yuheng Zhang, Infrared transmittance spectra of the granular perovskite Journal of Physics: Condensed Matter. ,vol. 10, pp. 4315- 4322 ,(1998) , 10.1088/0953-8984/10/19/019
N. D. Mathur, G. Burnell, S. P. Isaac, T. J. Jackson, B.-S. Teo, J. L. MacManus-Driscoll, L. F. Cohen, J. E. Evetts, M. G. Blamire, Large Low-Field Magnetoresistance in La0.7Ca0.3Mno3 Induced by Artificial Grain-Boundaries Nature. ,vol. 387, pp. 266- 268 ,(1997) , 10.1038/387266A0
Luis E. Hueso, José M. Pruneda, Valeria Ferrari, Gavin Burnell, José P. Valdés-Herrera, Benjamin D. Simons, Peter B. Littlewood, Emilio Artacho, Albert Fert, Neil D. Mathur, Transformation of spin information into large electrical signals using carbon nanotubes Nature. ,vol. 445, pp. 410- 413 ,(2007) , 10.1038/NATURE05507
Y. L. Cheng, J. M. Dai, X. B. Zhu, D. J. Wu, Z. R. Yang, Y. P. Sun, Enhanced Microwave Absorption Properties of Intrinsically Core/shell Structured La 0.6 Sr 0.4 MnO 3 Nanoparticles Nanoscale Research Letters. ,vol. 4, pp. 1153- 1158 ,(2009) , 10.1007/S11671-009-9374-Y
B. T. Xie, L. You, L. M. Wong, S. J. Wang, J. L. Wang, W. Prellier, Y. G. Zhao, T. Wu, Z. Zhang, R. Ranjith, Enhanced low field magnetoresistance in nanocrystalline La0.7Sr0.3MnO3 synthesized on MgO nanowires Applied Physics Letters. ,vol. 96, pp. 222501- ,(2010) , 10.1063/1.3432113
P.S. Solanki, R.R. Doshi, U.D. Khachar, M.V. Vagadia, A.B. Ravalia, D.G. Kuberkar, N.A. Shah, Structural, microstructural, transport, and magnetotransport properties of nanostructured La0.7Sr0.3MnO3 manganites synthesized by coprecipitation Journal of Materials Research. ,vol. 25, pp. 1799- 1802 ,(2010) , 10.1557/JMR.2010.0229
J.M.D. Coey, C.L. Chien, Half-Metallic Ferromagnetic Oxides Mrs Bulletin. ,vol. 28, pp. 720- 724 ,(2003) , 10.1557/MRS2003.212
H. Zare-Kolsaraki, H. Micklitz, Spin-dependent transport in films composed of Co clusters and C60 fullerenes European Physical Journal B. ,vol. 40, pp. 103- 109 ,(2004) , 10.1140/EPJB/E2004-00244-4
Chatchai Srinitiwarawong, Michael Ziese, Magnetoresistance of mechanically induced grain boundaries in La0.7Ca0.3MnO3 films Applied Physics Letters. ,vol. 73, pp. 1140- 1142 ,(1998) , 10.1063/1.122109
D. C. Worledge, T. H. Geballe, Spin-polarized tunneling in La0.67Sr0.33MnO3 Applied Physics Letters. ,vol. 76, pp. 900- 902 ,(2000) , 10.1063/1.125623