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对Fe_(53)Nd_(37)Al_(10)合金甩带速度为40和20 m/s条带样品的磁性能、磁粘滞行为和微观结构进行研究,分析了该合金条带的矫顽力机理。结果表明:Fe_(53)Nd_(37)Al_(10)合金甩带速度为40和20 m/s条带样品的剩余磁化强度M_r分别为33.50和36.05(A·m~2)·kg~(-1),矫顽力_iH_c为62.00和121.50 kA/m。40 m/s条带样品的热涨落场H_f,激活体积V_a和激活直径D_a分别为2.47 m T,3.90×10~(-18)cm~3和19.53nm;而20 m/s条带样品为2.73 mT,3.53×10~(-18)cm~3和18.89 nm。40 m/s条带样品里面存在直径小于5 nm的纳米团簇,而20 m/s条带样品的纳米团簇直径为5~10 nm,且纳米团簇数量更多。Fe-NdAl非晶条带里面同时存在交换耦合和钉扎2种作用,纳米团簇的尺寸和数量,以及多个团簇组成的作用单元是影响非晶条带矫顽力的主要原因。
The magnetic properties, magnetic viscosities and microstructures of the Fe_ (53) Nd_ (37) Al_ (10) alloy strip at 40 and 20 m / s were investigated. The coercive Force mechanism. The results show that the remanent magnetization (M_r) of Fe 53 Nd 37 Al 10 strip with the strip velocity of 40 and 20 m / s are 33.50 and 36.05 A · m 2 · kg ~ (-1) -1), coercivity _iH_c of 62.00 and 121.50 kA / m. The thermal fluctuation field H_f, the activation volume V_a and the activation diameter D_a of 40 m / s strip samples were 2.47 mT, 3.90 × 10 ~ (-18) cm ~ 3 and 19.53 nm, respectively; while 20 m / s strip samples 2.73 mT, 3.53 × 10 ~ (-18) cm ~ 3 and 18.89 nm. In the 40 m / s band samples, nanoclusters with diameter less than 5 nm were present in the band samples. The diameter of the nanoclusters in the 20 m / s band band was 5 ~ 10 nm and the number of nanoclusters was larger. There are two kinds of exchange coupling and pinning in the Fe-NdAl amorphous ribbon. The size and number of the nanoclusters and the action units composed of multiple clusters are the main factors affecting the coercivity of the amorphous ribbon.