Lorentz microscopy and small-angle electron diffraction study of magnetic textures in La${}_{1-x}$Sr${}_x$MnO${}_3$ (0.15 $<x<$ 0.30): the role of magnetic anisotropy

Abstract

Magnetic textures in the ferromagnetic phases of La${}_{1-x}$Sr${}_x$MnO${}_3$ for 0.15 $<x<$ 0.30 have been investigated by Lorentz microscopy combined with small-angle electron diffraction experiments. Various types of magnetic textures characterized by stripe, plate-shaped, and cylindrical (magnetic bubble) domains were found. Two distinct types of magnetic stripe domains appeared in the orthorhombic structure with an inversion symmetry of La${}_{0.825}$Sr${}_{0.175}$MnO${}_3$, depending significantly on magnetocrystalline anisotropy. Based on in-situ observations as functions of temperature and the strength of the external magnetic field, a magnetic field-temperature phase diagram was constructed, showing the stabilization of magnetic bubbles in the ferromagnetic phase of La${}_{0.825}$Sr${}_{0.175}$MnO${}_3$.

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Cited by in corpus (10)

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• Observation of magnetic domain and bubble structures in magnetoelectric Sr${}_3$Co${}_2$Fe${}_{24}$O${}_{41}$
• Electron diffraction covering a wide angular range from Bragg diffraction to small-angle diffraction
• Skyrmionics in correlated oxides
• Magnetic textures in a hexaferrite thin film and their response to magnetic fields revealed by phase microscopy
• Microscopic magnetization distribution of Bloch lines in a uniaxial magnet
• Multifunctional Oxides for Topological Magnetic Textures by Design
• Two types of magnetic bubbles in MnNiGa observed via Lorentz microscopy
• Observation of magnetic domains in uniaxial magnets via small-angle electron diffraction and Foucault imaging