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Long period helimagnetism in the cubic B20 FexCo1− xSi and CoxMn1− xSi alloys

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
47
Issue
5
Identifiers
DOI: 10.1016/0038-1098(83)90928-6

Abstract

Abstract We report magnetization, resistivity and small angle neutron scattering experiments on cubic B20 Fe x Co 1− x SI alloys (0.3 ⩽ x ⩽ 0.9) and Co x Mn 1− x Si allpys ( x = 0.02, 0.04 and 0.06). The magnetically ordered Fe x Co 1− x Si alloys and the Co x Mn 1− x Si alloys with x = 0.02 and 0.04 are found to be helimagnetic with very long period. The low temperature resistivity of the magnetically ordered Fe x Co 1− x Si alloys exhibits an anomalous positive magnetic contribution. The occurence of the Dzyalosyinsky-Moriya spin-orbit type interaction in these non-centrosymmetric alloys is given as a possible explanation of the helimagnetic order.

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