The structure and magnetic hysteresis properties of the cast Sm_(1-x)Zr_(x)(Fe_(0.92)Ti_(0.08))_(10)(x=0-0.3)alloys and melt-spun ribbons prepared from them were studied.In the cast alloy with x>0.2,a considerable ...The structure and magnetic hysteresis properties of the cast Sm_(1-x)Zr_(x)(Fe_(0.92)Ti_(0.08))_(10)(x=0-0.3)alloys and melt-spun ribbons prepared from them were studied.In the cast alloy with x>0.2,a considerable amount of the eutectic phase is found in the SEM micrographs.Analysis of the temperature dependences of the magnetic susceptibility and XRD patterns allows amorphous state in the as-spun ribbons with x>0.2 to be determined.The specific magnetization measured in a field of 17 kOe and remanence decrease with increasing annealing temperature from 800 to 900℃and weakly depend on Zr concentration.The maximal value of coercivity H_(c)=4.7 kOe is obtained on the ribbons with x=0.2 after annealing at 850℃for 10 min.After additional hydrogenation of the ribbons,both the coercivity and remanence increase by 54%and 7%,respectively.展开更多
基金Project supported by BRICS STI Framework Program for Basic Research(RFFI-BRICS)(17-52-80072)NSFC-BRICS(51761145026)the State Assignment of Ministry of Education and Science of the Russian Federation(topic“Magnet”)(AAAA-A18-118020290129-5)
文摘The structure and magnetic hysteresis properties of the cast Sm_(1-x)Zr_(x)(Fe_(0.92)Ti_(0.08))_(10)(x=0-0.3)alloys and melt-spun ribbons prepared from them were studied.In the cast alloy with x>0.2,a considerable amount of the eutectic phase is found in the SEM micrographs.Analysis of the temperature dependences of the magnetic susceptibility and XRD patterns allows amorphous state in the as-spun ribbons with x>0.2 to be determined.The specific magnetization measured in a field of 17 kOe and remanence decrease with increasing annealing temperature from 800 to 900℃and weakly depend on Zr concentration.The maximal value of coercivity H_(c)=4.7 kOe is obtained on the ribbons with x=0.2 after annealing at 850℃for 10 min.After additional hydrogenation of the ribbons,both the coercivity and remanence increase by 54%and 7%,respectively.
