Thickness dependent magnetic properties of BiFeO3 thin films prepared by pulsed laser deposition

초록

BiFe1-xMnxO3 thin films having thickness 65 and 130 nm was fabricated on LAO substrates using pulsed laser deposition technique and its structural and magnetic properties were examined. Atomic force microscopy images confirmed that, as the thickness of the films increases the particles size also increases resulting in the decrease of magnetization. The possible cause for the lowering of magnetization with film thickness was discussed. Increase of spontaneous magnetization in BiFeO3 at room temperature was observed with Mn substitution for Fe. The blocking temperature was found to decrease with increasing film thickness. (C) 2011 Elsevier B.V. All rights reserved.

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