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The relation between the length of the magnetic core (l) and the giant magnetoimpedance(GMI) effect of solenoid with magnetic core of Fe36 Co36 Nb4Si4.8 B19.2 ribbon which annealed with current 32 A/mm2 for 10 min, has been investigated. The result shows that there is a sensitive relation between l and GMI. There is a linear relation between the l and the maximum of the GMI (Z/Z)max when l is smaller than the length of the solenoid l0. The linear correlation coefficient can be deduced from the electromagnetism theory. It should deviate from the linear relation when l is greater than l0. There is a maximum value of the (Z/Z)max when the l reaches the best value. There is a similar relation between the height of the tip like part of the GMI profile (Z/Z)T and l. There is a maximum value of the (Z/Z)T when the l is the best value. The tip like part of the GMI profile, which responds to the weak magnetic field sensitively, is influenced by the demagnetizing field. There is a negative exponential relation between the demagnetizing field and the length of the magnetic core l.
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Keywords:
- solenoid with magnetic core /
- FeCo-based ribbon /
- giant magnetoimpedance effect /
- length of magnetic core
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[18] [19] Pan H L, Cheng J K, Zhao Z J, He J K, Ruan J Z, Yang X L, Yuan W Z 2008 Acta Phys. Sin. 57 3230 ( in Chinese) [潘海林、程金科、赵振杰、何家康、阮建中、杨燮龙、袁望治 2008 物理学报 57 3230]
[20] [21] Yang Q M, Xu Q M, Yang Y, Fang Y Z 2008 Acta Phys. Sin. 57 1008 (in Chinese) [杨全民、许启明、杨 燚、方允樟 2008 物理学报 57 1008]
[22] Yang Q M, Xu Q M, Fang Y Z, Mo C J 2009 Acta Phys. Sin. 58 4072 (in Chinese) [杨全民、许启明、方允樟、莫婵娟 2009 物理学报 58 4072]
[23] [24] [25] Phan M H, Peng H X 2008 Prog. Mater. Sci. 53 323
[26] Yang J X, Yang X L, Chen G, Jiang K Y, Shen G T, Hu B Y, Jin R P 1998 Chin. Sci. Bull. 43 1050 (in Chinese) [杨介信、杨燮龙、陈 国、蒋可玉、沈国土、胡炳元、金若鹏 1998 科学通报 43 1050]
[27] -
[1] Mohri K, Kohzawa T, Kawashima K, Yoshida Y, Panina L V 1992 IEEE Trans. Magn. 28 3150
[2] [3] Mohri K, Kawashima K, Kohzawa T, Yoshida Y 1993 IEEE Trans. Magn. 29 1245
[4] [5] Mohri K, Bushida K, Noda M, Yoshida H, Panina L V, Vchiyama T 1995 IEEE Trans. Magn. 31 2455
[6] Vazquez M, Hernando A 1996 J. Phys. D 29 939
[7] [8] [9] Vazquez M 2001 J. Magn. Magn. Mater. 226-230 693
[10] Knobel M, Pirota K R 2002 J. Magn. Magn. Mater. 242-245 33
[11] [12] Kraus L 2003 Sens. Acta A 106 187
[13] [14] Liu L P, Zhao Z J, Huang C X 2006 Acta Phys. Sin. 55 2014 (in Chinese) [刘龙平、赵振杰、黄灿星 2006 物理学报 55 2014]
[15] [16] [17] Zhong Z Y, Lan Z W, Zhang H W, Liu Y L, Wang H C 2001 Acta Phys. Sin. 50 1610 ( in Chinese) [钟智勇、兰中文、张怀 武、刘颖力、王豪才 2001 物理学报 50 1610]
[18] [19] Pan H L, Cheng J K, Zhao Z J, He J K, Ruan J Z, Yang X L, Yuan W Z 2008 Acta Phys. Sin. 57 3230 ( in Chinese) [潘海林、程金科、赵振杰、何家康、阮建中、杨燮龙、袁望治 2008 物理学报 57 3230]
[20] [21] Yang Q M, Xu Q M, Yang Y, Fang Y Z 2008 Acta Phys. Sin. 57 1008 (in Chinese) [杨全民、许启明、杨 燚、方允樟 2008 物理学报 57 1008]
[22] Yang Q M, Xu Q M, Fang Y Z, Mo C J 2009 Acta Phys. Sin. 58 4072 (in Chinese) [杨全民、许启明、方允樟、莫婵娟 2009 物理学报 58 4072]
[23] [24] [25] Phan M H, Peng H X 2008 Prog. Mater. Sci. 53 323
[26] Yang J X, Yang X L, Chen G, Jiang K Y, Shen G T, Hu B Y, Jin R P 1998 Chin. Sci. Bull. 43 1050 (in Chinese) [杨介信、杨燮龙、陈 国、蒋可玉、沈国土、胡炳元、金若鹏 1998 科学通报 43 1050]
[27]
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