Xianghua LIU
,
Ge YAN
,
Liya CUI
,
Shaoxiong ZHOU
,
Wu ZHENG
,
Ailing WANG
,
Jinchang CHEN
材料科学技术（英文）
Sm22Co78/Fe65Co35/Sm22Co78/Fe65Co35 multilayer films were prepared by magnetron sputtering. The temperature dependence of coercivity (H-c), remanence (M-r) and reduced remanence (M-r/M-s) has been measured. The coercivity decreases with increasing of temperature. The remanence decreases with increasing the temperature from 26 to 100 degrees C, and then increases with continuously increasing the temperature from 100 to 150 degrees C. The reduced remanence increases with increasing the temperature.
关键词:
Deren LI
,
Zhichao LU
,
Wei HAN
,
Shaoxiong ZHOU
,
Zhen GAO
,
Junfeng ZHANG
,
Hui LIU
材料科学技术（英文）
The giant stress-impedance (GSI) effect in amorphous and current annealed Fe73.5Cu1Nb3Si13.5B9 ribbons has been investigated. The results showed that the GSI effect changed drastically with annealing techniques and the maximum stress impedance ratio of 350% was obtained after optimal conditions of current annealing. The behaviors of the stress impedance vary with densities of annealing current and the stress longitudinally applied during currentannealing. The maximum change of stress impedance existed in the sample annealed by high-current-density electropulsing under applied stress of 100 MPa.
关键词:
Amorphous ribbon
,
null
,
null
,
null
,
null
Wenzhi CHEN
,
Shaoxiong ZHOU
,
Jinchang CHEN
材料科学技术（英文）
M-s-T curves and hysteresis loops were investigated for amorphous Fe78Si9B13, (FeNi)(78)(CrSiB)(22), their lap-wound-cores, and their composite ribbons made by two-chamber-crucible technique. The properties of the lap-wound cores of the two kinds of ribbons are similar. For the composite ribbons. the intrinsic properties are the average of the two alloys. Their technological properties, i.e., hysteresis loops, however, are no longer the average of the two alloys. Instead, they show some dramatic changes compared to the lap-wound-cores. Especially, the shape of the hysteresis loop of the composite ribbon cores is largely different from that of lap-wound-cores. The reason for the difference is supposed to be internal stress induced from cooling after annealing.
关键词:
