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Core/shell structured SrFe12O19/FeCo particles were synthesized through a microwave-polyol process. The magnetic exchange coupling between SrFe12O19 and FeCo was investigated by magnetic hysteresis loop and Henkel plot. Compared with electric plate heating, which is reported to result in SrFe12O19 loss during the reaction, microwave heating requires shorter reaction time and leads to less SrFe12O19...