Magnetic Imaging Of Perovskite Thin Films By Ferromagnetic Resonance Microscopy-La0.7sr0.3mno3
Applied Physics Letters(1999)
Abstract
We present ferromagnetic resonance scans of epitaxial thin films of La0.7Sr0.3MnO3. In most films, the resonance field indicates the presence of large stresses, the line is wide and both the field and width vary significantly with position. However, in the perpendicular geometry (field normal to the film plane) the best films show narrow lines (< 20 Oe) which are relatively independent of position, indicative of magnetic homogeneity. The experiments show that this technique can be used as a contactless, nondestructive diagnostic tool for assessing the magnetic quality of colossal magnetoresistance thin films. (C) 1999 American Institute of Physics. [S0003-6951(99)00739-1].
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Key words
magnetic properties,thin film,spin wave,ferromagnetic resonance
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