Evolution of magnetic bubble domains in manganite films

S. R. Bakaul, W. Lin, Tao Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

We report a thickness-dependent evolution of magnetic domains from long stripe-like to bubble-like entities in La1-xSrxMnO 3 (x ∼ 0.3) (LSMO) films grown on LaAlO3 substrates. By using 2-D fast Fourier transformation of magnetic force microscopy images and power spectral density function, we accurately determine the domain width in LSMO films with a wide range of thickness (50-325 nm). We find that the domain size scales with the Kittel's square root law [C. Kittel, Phys. Rev. 70, 965 (1946).] only when reduced film thicknesses are used, which suggests the critical role of substrate-film interaction in domain formation.

Original languageEnglish (US)
Article number042503
JournalApplied Physics Letters
Volume99
Issue number4
DOIs
StatePublished - Jul 25 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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