Magnetic transitions at high fields in (Fe,Mn)3Si alloys

H. J. Al-Kanani; J. G. Booth; J. W. Cable; J. A. Fernandez-Baca

doi:10.1063/1.358266

Magnetic transitions at high fields in (Fe,Mn)₃Si alloys

H. J. Al-Kanani, J. G. Booth, J. W. Cable, J. A. Fernandez-Baca

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Abstract

In the series of ordered DO₃ solid solutions Fe _3-xMn_xSi, field-induced transitions have previously been found to occur for antiferromagnetic alloys with values of x near 1.70. The present work has determined a region of composition in which antiferromagnetism is the low-field, low-temperature state and gives the variation of the critical field as a function of temperature and composition. The critical field decreases approximately quadratically with temperature and rises to beyond 6 T in the range of composition from 1.6≤x≤1.8. Neutron diffraction indicates that the antiferromagnetic axis is shifted from the [111] direction and that in a 5 T field the antiferromagnetic component of the scattering is reduced considerably from that in zero field. However, no corresponding increase in ferromagnetic component is observed within experimental error and Arrott plots suggest the high-field state is still largely antiferromagnetic.

Original language	English
Pages (from-to)	6359-6361
Number of pages	3
Journal	Journal of Applied Physics
Volume	76
Issue number	10
DOIs	https://doi.org/10.1063/1.358266
State	Published - 1994

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title = "Magnetic transitions at high fields in (Fe,Mn)3Si alloys",

abstract = "In the series of ordered DO3 solid solutions Fe 3-xMnxSi, field-induced transitions have previously been found to occur for antiferromagnetic alloys with values of x near 1.70. The present work has determined a region of composition in which antiferromagnetism is the low-field, low-temperature state and gives the variation of the critical field as a function of temperature and composition. The critical field decreases approximately quadratically with temperature and rises to beyond 6 T in the range of composition from 1.6≤x≤1.8. Neutron diffraction indicates that the antiferromagnetic axis is shifted from the [111] direction and that in a 5 T field the antiferromagnetic component of the scattering is reduced considerably from that in zero field. However, no corresponding increase in ferromagnetic component is observed within experimental error and Arrott plots suggest the high-field state is still largely antiferromagnetic.",

author = "Al-Kanani, {H. J.} and Booth, {J. G.} and Cable, {J. W.} and Fernandez-Baca, {J. A.}",

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T1 - Magnetic transitions at high fields in (Fe,Mn)3Si alloys

AU - Al-Kanani, H. J.

AU - Booth, J. G.

AU - Cable, J. W.

AU - Fernandez-Baca, J. A.

PY - 1994

Y1 - 1994

N2 - In the series of ordered DO3 solid solutions Fe 3-xMnxSi, field-induced transitions have previously been found to occur for antiferromagnetic alloys with values of x near 1.70. The present work has determined a region of composition in which antiferromagnetism is the low-field, low-temperature state and gives the variation of the critical field as a function of temperature and composition. The critical field decreases approximately quadratically with temperature and rises to beyond 6 T in the range of composition from 1.6≤x≤1.8. Neutron diffraction indicates that the antiferromagnetic axis is shifted from the [111] direction and that in a 5 T field the antiferromagnetic component of the scattering is reduced considerably from that in zero field. However, no corresponding increase in ferromagnetic component is observed within experimental error and Arrott plots suggest the high-field state is still largely antiferromagnetic.

AB - In the series of ordered DO3 solid solutions Fe 3-xMnxSi, field-induced transitions have previously been found to occur for antiferromagnetic alloys with values of x near 1.70. The present work has determined a region of composition in which antiferromagnetism is the low-field, low-temperature state and gives the variation of the critical field as a function of temperature and composition. The critical field decreases approximately quadratically with temperature and rises to beyond 6 T in the range of composition from 1.6≤x≤1.8. Neutron diffraction indicates that the antiferromagnetic axis is shifted from the [111] direction and that in a 5 T field the antiferromagnetic component of the scattering is reduced considerably from that in zero field. However, no corresponding increase in ferromagnetic component is observed within experimental error and Arrott plots suggest the high-field state is still largely antiferromagnetic.

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Magnetic transitions at high fields in (Fe,Mn)₃Si alloys

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