Evolution of magnetic bubble domains in manganite films

S. R. Bakaul; W. Lin; T. Wu

doi:10.1063/1.3615708

Evolution of magnetic bubble domains in manganite films

S. R. Bakaul, W. Lin, T. Wu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

We report a thickness-dependent evolution of magnetic domains from long stripe-like to bubble-like entities in La_1-xSr_xMnO 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 language	English (US)
Article number	042503
Journal	Applied Physics Letters
Volume	99
Issue number	4
DOIs	https://doi.org/10.1063/1.3615708
State	Published - Jul 25 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Evolution of magnetic bubble domains in manganite films",

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.",

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AU - Bakaul, S. R.

AU - Lin, W.

AU - Wu, T.

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N2 - 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.

AB - 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.

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Evolution of magnetic bubble domains in manganite films

Abstract

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