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1. Introduction So far the microstructure and coercivityof Sm(Co, Cu, Fe, Zr)_(7.4) alloy have beenstudied in detail by various authors. The effect of Zr-rich laminar phasestructure on the high coecivity of alloyis more attractive. The changes of magnetic
1. Introduction So far the microstructure and coercivity of Sm (Co, Cu, Fe, Zr) _ (7.4) alloy have been studied in detail by various authors. The effect of Zr-rich laminar phase structure on the high coecivity of alloyis more attractive. changes of magnetic