Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/10054/9037
Title: A STUDY OF ANISOTROPIC MAGNETORESISTANCE IN A-FENIMNBSI ALLOYS
Authors: SHARMA, N
PRASAD, S
NIGAM, AK
CHANDRA, G
SHRINGI, SN
KRISHNAN, R
Keywords: Spontaneous Resistivity Anisotropy
Electrical-Resistivity
Metallic Glasses
Ni
Ferromagnetism
Transition
Weak
Issue Date: 1994
Publisher: IOP PUBLISHING LTD
Citation: JOURNAL OF PHYSICS-CONDENSED MATTER, 6(28), 5493-5506
Abstract: Longitudinal and transverse magnetoresistivity measurements have been performed on a-Fe40-xNi40MnxB12Si8 alloys (0 less-than-or-equal-to x less-than-or-equal-to 5.5) in fields up to 40 kG, at 4.2 K, 100 K, 200 K, and 300 K. Above technical saturation, all the alloys exhibit a negative slope, i.e. the resistivity decreases as a function of the magnetic field. The high-field magnetoresistivity slope becomes more and more negative with increasing Mn concentration. Assuming that the negative slope of magnetoresistance is caused by the suppression of spin waves, the temperature and composition dependence of magnetoresistivity of the present series could be qualitatively understood. The spin-wave contribution to the zero-field resistivity has been estimated using a simplified approach. Furthermore, the ferromagnetic anisotropy of resistivity (FAR) has been calculated and the results are analysed in the light of a two-current conduction model generalized to weak ferromagnets and amorphous alloys.
URI: http://dx.doi.org/10.1088/0953-8984/6/28/022
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9037
http://hdl.handle.net/10054/9037
ISSN: 0953-8984
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