中国物理B ›› 2002, Vol. 11 ›› Issue (1): 77-82.doi: 10.1088/1009-1963/11/1/316

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The effect of Nb addition on the thermal stability and magnetic properties of Fe-based amorphous alloys with a wide supercooled liquid region

赵玉华1, 程力智1, 何开元1, 赵恒和1, 荣传兵2, 徐民3   

  1. (1)Department of Functional Materials, Institute of Material and Metallurgy, Northeastern University, Shenyang 110004, China; (2)State Key Laboratory of Magnetism, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Functional Materials, Institute of Material and Metallurgy, Northeastern University, Shenyang; (3)State Key Laboratory of Rapidly Solidified Nonequilibrium Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • 收稿日期:2001-06-18 修回日期:2001-08-30 出版日期:2002-01-12 发布日期:2005-06-12

The effect of Nb addition on the thermal stability and magnetic properties of Fe-based amorphous alloys with a wide supercooled liquid region

Rong Chuan-Bing (荣传兵)ab, Zhao Yu-Hua (赵玉华)b, Cheng Li-Zhi (程力智)b, Xu Min (徐民)c, He Kai-Yuan (何开元)b, Zhao Heng-He (赵恒和)b   

  1. a State Key Laboratory of Magnetism, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; b Department of Functional Materials, Institute of Material and Metallurgy, Northeastern University, Shenyang110004, China; c State Key Laboratory of Rapidly Solidified Nonequilibrium Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2001-06-18 Revised:2001-08-30 Online:2002-01-12 Published:2005-06-12

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摘要： We have examined the effect of Nb addition on the thermal stability of the supercooled liquid before crystallization, the glass-forming ability and magnetic properties for the amorphous alloy series Fe73NbxAl5-xGe2P10C6B4 and Fe63Co7NbxZr10-xB20. The supercooled liquid regions (ΔTx=Tx-Tg) have maximum values of 66 and 79K, respectively, for Fe73Nb1Al4Ge2P10C6B4 and Fe63Co7Nb4Zr6B20 alloys. The saturation magnetization σs of the Fe73NbxAl5-xGe2P10C6B4 alloy system is much higher than that of the Fe63Co7NbxZr10-xB20 alloy system, and is almost unchanged with an increasing Nb content from 0 to 3 at%. But the σs of the Fe63Co7NbxZr10-xB20 alloys decreases linearly with increasing Nb content. The coercive force Hc of the two alloy series can have a minimum value of 31A/m for Fe73Nb1Al4Ge2P10C6B4 and 37A/m for Fe63Co7Nb4Zr6B20. All these values are for the ribbons annealed at 773 and 873K for 15min in vacuum.

Abstract: We have examined the effect of Nb addition on the thermal stability of the supercooled liquid before crystallization, the glass-forming ability and magnetic properties for the amorphous alloy series Fe73NbxAl5-xGe2P10C6B4 and Fe63Co7NbxZr10-xB20. The supercooled liquid regions (ΔTx=Tx-Tg) have maximum values of 66 and 79K, respectively, for Fe73Nb1Al4Ge2P10C6B4 and Fe63Co7Nb4Zr6B20 alloys. The saturation magnetization $\sigma_{\rm s}$ of the Fe73NbxAl5-xGe2P10C6B4 alloy system is much higher than that of the Fe63Co7NbxZr10-xB20 alloy system, and is almost unchanged with an increasing Nb content from 0 to 3 at%. But the $\sigma_{\rm s}$ of the Fe63Co7NbxZr10-xB20 alloys decreases linearly with increasing Nb content. The coercive force Hc of the two alloy series can have a minimum value of 31A/m for Fe73Nb1Al4Ge2P10C6B4 and 37A/m for Fe63Co7Nb4Zr6B20. All these values are for the ribbons annealed at 773 and 873K for 15min in vacuum.

Key words: supercooled liquid region, ferromagnetism, amorphous alloy

中图分类号:  (Amorphous and quasicrystalline magnetic materials)

  • 75.50.Kj
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.60.Nt (Magnetic annealing and temperature-hysteresis effects) 81.40.Ef (Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization)