Fig. 1: Structural evolution and magnetic properties of LCO films during anneal process. | Nature Communications

Fig. 1: Structural evolution and magnetic properties of LCO films during anneal process.

From: Near-room temperature ferromagnetic insulating state in highly distorted LaCoO2.5 with CoO5 square pyramids

Fig. 1

Low magnification high-angle angular dark-field (HAADF) images of a pristine LCO3, b LCO2.67, and c nLCO2.5 films grown on LAO substrates. The corresponding selected-area electron diffraction (SAED) patterns are inserted on the right top corner of each panel, where the yellow arrows indicate the positions of superstructure spots. The white bar represents 10 nm in scale. d M-T curves of LCO3 and nLCO2.5 films. The measurements were carried out during the sample warm-up under a magnetic field of 0.1 T. Solid and open symbols represent the field-cooled (FC) and zero-field-cooled (ZFC) data, respectively. e, f M-H curves of LCO3 and nLCO2.5 films at 10 and 200 K, respectively.

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