Permeability and giant magnetoimpedance in Co{sub 69}Fe{sub 4.5}X{sub 1.5}Si{sub 10}B{sub 15} (X=Cr, Mn, Ni) amorphous ribbons
The magnetoimpedance (MI) has been measured in the amorphous ribbons of the soft ferromagnetic alloy Co{sub 69}Fe{sub 4.5}X{sub 1.5}Si{sub 10}B{sub 15} (X=Cr, Mn, Ni) as functions of frequency (f). For all of the three samples, at low frequency, f{le}5MHz, the MI ratio increases with increasing frequency, but the MI ratio decreases at high frequency, f{ge}5MHz. The MI profiles are not changed at low frequency regions of f{le}1MHz in the amorphous ribbons. The MI ratio at high frequency of f=5MHz becomes 57% in Co{sub 69}Fe{sub 4.5}Cr{sub 1.5}Si{sub 10}B{sub 15}, but the MI ratio becomes 30% in Co{sub 69}Fe{sub 4.5}Mn{sub 1.5}Si{sub 10}B{sub 15} and Co{sub 69}Fe{sub 4.5}Ni{sub 1.5}Si{sub 10}B{sub 15}. The MI ratio at f=10MHz becomes 45% in Co{sub 69}Fe{sub 4.5}Cr{sub 1.5}Si{sub 10}B{sub 15} and the MI ratio becomes 23% in Co{sub 69}Fe{sub 4.5}Mn{sub 1.5}Si{sub 10}B{sub 15} and Co{sub 69}Fe{sub 4.5}Ni{sub 1.5}Si{sub 10}B{sub 15}, respectively. The maximum values of field sensitivity are 2.7(X=Cr), 2.5(X=Mn), 2.2(X=Ni)%/Oe for f=5MHz. {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204009
- Journal Information:
- Journal of Applied Physics, Vol. 89, Issue 11; Other Information: DOI: 10.1063/1.1359226; Othernumber: JAPIAU000089000011007218000001; 389111MMM; PBD: 1 Jun 2001; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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