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The variations of low field magnetic susceptibility (a) and lattice parameters (b) of CoO as a function of temperature.
(a) (c) The 2D and diffraction spots and (b) (d) 1D diffraction pattern of CoO single crystal at 250 K (a) (b) and 200 K (c) (d). The incident x-ray beam was parallel to and the magnetic field was applied along (i.e., perpendicular to the beam).
(a) Relative change in integral intensities for and diffraction peaks under different magnetic fields at 250 and 200 K and (b) corresponding schematic arrangements of three martensite variants below Néel temperature generated from one single crystal of parent phase. The magnetic moment direction in the antiferromagnetic domains is also schematically displayed.
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