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TEM micrographs for (a) as-grown, and (b) -annealed samples.
X-ray powder diffraction patterns for the as-grown and annealed samples.
Y K-edge EXAFS data. Fine lines: experimental; Coarse lines: curve fitting. Inset: weighted functions.
M-H curves for 500-, 600-, 700-, and -annealed samples. Inset: a magnified curve showing hysteresis for the -annealed sample as an example.
Parameters of local structure around Y atoms. N is the coordination number. R is the bond length. is the Debye-Waller-like factor. is the difference between the zero kinetic energy value of the sample and that of the theoretical model used in FEFF. Underlined values were kept constant during fitting. Uncertainties were estimated by the double-minimum residue method.
Parameters of local structure around Co atoms.
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