Magnetoresistance of artificial La0.7Sr0.3MnO3 grain boundaries as a function of misorientation angle
作者： S. P. Isaac , N. D. Mathur , J. E. Evetts , M. G. Blamire
DOI: 10.1063/1.121257
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摘要: The resistance of polycrystalline doped LaMnO3 materials has been shown to be highly sensitive low magnetic fields. To enable direct study the properties isolated grain boundaries we have grown epitaxial La0.7Sr0.3MnO3 films on a series bicrystal substrates with different misorientation angles and patterned into Wheatstone bridge geometry. We show that boundary its field dependence vary strongly angle. temperature is also presented. obtained changes over 3% in fields 2 mT at 300 K.
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R. von Helmolt, J. Wecker, B. Holzapfel, L. Schultz, K. Samwer, Giant negative magnetoresistance in perovskitelike La2/3Ba1/3MnOx ferromagnetic films. Physical Review Letters. ,vol. 71, pp. 2331- 2333 ,(1993) , 10.1103/PHYSREVLETT.71.2331
G. Jeffrey Snyder, Ron Hiskes, Steve DiCarolis, M. R. Beasley, T. H. Geballe, Intrinsic electrical transport and magnetic properties of La0.67Ca0.33MnO3 and La0.67Sr0.33MnO3 MOCVD thin films and bulk material. Physical Review B. ,vol. 53, pp. 14434- 14444 ,(1996) , 10.1103/PHYSREVB.53.14434
H. Y. Hwang, S-W. Cheong, N. P. Ong, B. Batlogg, Spin-Polarized Intergrain Tunneling in La 2/3 Sr 1/3 MnO 3 Physical Review Letters. ,vol. 77, pp. 2041- 2044 ,(1996) , 10.1103/PHYSREVLETT.77.2041
M. F. Chisholm, S. J. Pennycook, Structural origin of reduced critical currents at YBa2Cu3O7–δ grain boundaries Nature. ,vol. 351, pp. 47- 49 ,(1991) , 10.1038/351047A0
M. Julliere, Tunneling between ferromagnetic films Physics Letters A. ,vol. 54, pp. 225- 226 ,(1975) , 10.1016/0375-9601(75)90174-7
A. Gupta, G. Q. Gong, Gang Xiao, P. R. Duncombe, P. Lecoeur, P. Trouilloud, Y. Y. Wang, V. P. Dravid, J. Z. Sun, Grain-boundary effects on the magnetoresistance properties of perovskite manganite films Physical Review B. ,vol. 54, ,(1996) , 10.1103/PHYSREVB.54.R15629
J. S. Helman, B. Abeles, Tunneling of Spin-Polarized Electrons and Magnetoresistance in Granular Ni Films Physical Review Letters. ,vol. 37, pp. 1429- 1432 ,(1976) , 10.1103/PHYSREVLETT.37.1429
K. Steenbeck, T. Eick, K. Kirsch, K. O’Donnell, E. Steinbeiß, Influence of a 36.8° grain boundary on the magnetoresistance of La0.8Sr0.2MnO3−δ single crystal films Applied Physics Letters. ,vol. 71, pp. 968- 970 ,(1997) , 10.1063/1.119702
M. A. Subramanian, B. H. Toby, A. P. Ramirez, W. J. Marshall, A. W. Sleight, G. H. Kwei, Colossal Magnetoresistance Without Mn3+/Mn4+ Double Exchange in the Stoichiometric Pyrochlore Tl2Mn2O7 Science. ,vol. 273, pp. 81- 84 ,(1996) , 10.1126/SCIENCE.273.5271.81
S. Jin, T. H. Tiefel, M. McCormack, R. A. Fastnacht, R. Ramesh, L. H. Chen, Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films Science. ,vol. 264, pp. 413- 415 ,(1994) , 10.1126/SCIENCE.264.5157.413