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Low-temperature transverse magnetic domains in nominally uniaxial La0.67Sr0.33MnO3 films on NdGaO3 (0 0 1)

DOI: 10.1088/0022-3727/46/3/032002 DOI Help

Authors: Lee Phillips (University of Cambridge) , Massimo Ghidini (University of Cambridge) , Xavier Moya (University of Cambridge) , Francesco Maccherozzi (Diamond Light Source) , Sarnjeet Dhesi (Diamond Light Source) , Neil Mathur (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Physics D: Applied Physics , VOL 46 (3)

State: Published (Approved)
Published: December 2012

Abstract: Epitaxial La0.67Sr0.33MnO3 films grown on orthorhombic NdGaO3 (0?0?1) substrates show predominantly uniaxial magnetic anisotropy. On cooling, we observe the growth of a biaxial contribution, which we quantify by fitting magnetometry data to a coherent rotation model. A film grown under deliberately sub-optimal conditions shows a relatively stronger biaxial contribution that results in a significant population of transverse magnetic domains below ~200 K, as revealed by photoemission electron microscopy with x-ray magnetic circular dichroism contrast. Care should be taken to avoid these transverse domains in spintronic devices designed to exploit the high low-temperature spin-polarization of La0.67Sr0.33MnO3.

Journal Keywords: Anisotropy; Electron Microscopy; Epitaxy; Films; Gallium Compounds; Lanthanum Compounds; Magnetic Circular Dichroism; Manganates; Neodymium Compounds; Orthorhombic Lattices; Oxygen Compounds; Photoemission; Spin Orientation; Strontium Compounds; Substrate

Subject Areas: Physics

Instruments: I06-Nanoscience

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