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(Color online) The XRD pattern of with .
(Color online) The magnetization hysteresis loops for bulks (a) with and (b) without Zn treatment, respectively. The inset of (a) shows estimated saturation magnetization and the coercivity as a function of Co concentration. The lines are guides of eye.
(Color online) Temperature dependence of the magnetization in an applied field of for bulks with and without Zn treatment, respectively. The line plots the modified Curie-Weiss behavior for bulk without Zn treatment (see text).
(Color online) Magnetic hysteresis loops for bulk prior to Zn vapor treatment (down triangles), after first Zn vapor treatment (squares), annealed in air after first Zn vapor treatment (up triangles), and after second Zn vapor treatments (circles), respectively.
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