Room temperature ultrahigh magnetoresistance in La0.67Sr0.33MnO3 thin films with ordered nanometer structure

    Authors

    F. C. Zhang; W. Z. Gong; C. Cai; B. Xu; X. G. Qiu; R. Vanfleet; L. Chow;B. R. Zhao

    Comments

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    Abbreviated Journal Title

    Solid State Commun.

    Keywords

    magnetic films and multilaylers; nanostructures; epitaxy; electronic; transport; LOW-FIELD MAGNETORESISTANCE; GRAIN-BOUNDARIES; JUNCTIONS; LA0.7CA0.3MNO3; FERROMAGNET; Physics, Condensed Matter

    Abstract

    We report the preparation and investigation of ferromagnetic La0.67Sr0.33MnO3 (LSMO) thin films with orthogonally (along (110) and (1 (1) over bar0)) distributed nanometer-scale cracks. When the density of cracks reaches similar to10(4) cm(-1), the magnetoresistance MR = (R-H - R-0)/R-0 > - 30% was observed in the magnetic fields less than or equal to200 Oe and temperature range from 5 to > 300 K. The discussion about such unique feature will be done based on the spin-polarized electron tunneling and spin scattering, (C) 2004 Elsevier Ltd. All rights reserved.

    Journal Title

    Solid State Communications

    Volume

    131

    Issue/Number

    3-4

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    271

    Last Page

    274

    WOS Identifier

    WOS:000222698400024

    ISSN

    0038-1098

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