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(Color online) (a) Temperature dependence of magnetization for in the ZFC and the FC modes measured at . The inset is the same plot in a temperature range of . (b) Temperature dependence of the inverse of magnetic susceptibility for . The solid line is the calculated curve according to the Curie-Weiss law.
(Color online) Magnetization vs temperature in the ZFC and the FC modes at different magnetic fields of (a) 100, 300, and , (b) 700, 900, and , and (c) 2000, 5000, 10 000, 20 000, 50 000, and in log scale.
(Color online) loops at different temperatures for : (a) 5, 17, 32, and 40, (b) 44, (c) 47, (d) 50, and (e) 60, 100, 200, and .
(Color online) (a) Magnetization as a function of temperature for at in the ZFC mode. The solid line is the fitting curve based on the expression for the PM behavior. (b) Temperature dependence of magnetization at in the FC and the ZFC modes after subtracting the PM contribution in (a).
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