本文研究了复合焦耳处理对Co68.15Fe4.35Si12.5B15非晶薄带巨磁阻抗效应的影响.实验结果表明:经前段电流密度10 A/mm2,后段电流密度30 A/mm2的复合焦耳处理后样品获得了最大的GMI效应.在8MHz的交变电流频率下,最大磁阻抗比为217%,灵敏度为114%/Oe,比淬态下的最大磁阻抗比和灵敏度均有明显提高.复合焦耳处理是提高材料GMI效应的一种新型的而且十分有效的方法.
参考文献
| [1] | Mohri K.;Kohsawa T. .Magneto-inductive effect (MI effect) in amorphous wires[J].IEEE Transactions on Magnetics,1992(5):3150-3152. |
| [2] | Panina L.V.;Mohri K. .Giant magneto-impedance in Co-rich amorphous wires and films[J].IEEE Transactions on Magnetics,1995(2):1249-1260. |
| [3] | Sommer RL.;Chien CL. .GIANT MAGNETO-IMPEDANCE EFFECTS IN METGLAS 2705M[J].Journal of Applied Physics,1996(8 Pt.2a):5139-5141. |
| [4] | Chen C.;Liu YH.;Mei LM.;Guo HQ.;Shen BG.;Zhao JG.;Luan KZ. .GIANT MAGNETOIMPEDANCE EFFECTS IN THE SOFT FERROMAGNET FE73.5CUNB3SI13.5B9[J].Physical Review.B.Condensed Matter,1996(9):6092-6094. |
| [5] | 吴厚政,刘宜华,代由勇,张林,萧淑琴.磁场退火对CoFeNiNbSiB薄带巨磁阻抗的影响[J].金属学报,2002(10):1087-1090. |
| [6] | Uchiyama T.;Mohri K. .Position sensing of magnetite gel using MI sensor for brain tumor detection[J].IEEE Transactions on Magnetics,1997(5):4266-4268. |
| [7] | 钟智勇,张怀武,刘颖力,王豪才.巨磁阻抗效应研究的最近进展[J].功能材料,2001(01):16-18. |
| [8] | Chiriac H.;Ovari T.-A. .Comparative study of the giant magneto-impedance effect in CoFeSiB glass-covered and cold-drawn amorphous wires[J].IEEE Transactions on Magnetics,1997(5):3352-3354. |
| [9] | Wano-Wari;Arao-Machi et al.Development of amorphous wire type MI sensors for automobile use[J].Journal of Magnetism and Magnetic Materials,2002,249:375. |
| [10] | Mohri K;Uchiyama T et al.Sensitive micro magnetic sensor family utilizing magneto-impedance (MI) and stress-impedance (SI) effects for intelligent measurements and controls[J].Sensors and Actuators A-physical,2001,91:85. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%