Abstract
Interest in magnetism of Cu-Mn alloys has been revived and sustained by a number of very interesting neutron investigations on single-crystal samples which show `spin-density wave` (SDW) peaks at incommensurate wave-vectors. Recently such peaks have been observed even in very dilute samples with Mn concentration as low as {approx} 0.5 at.%. The proposed interpretation by the authors that these peaks represent incommensurate antiferromagnetic ordering, therefore, questions the widely-held view that at low enough temperatures the solute spins in this and similar alloys freeze with random or quasi-random orientations, forming a spin-glass state. Atomic and magnetic correlations have been investigated in a single crystal of Cu-5 at.% Mn within the first Brillouin zone using polarised neutrons and making use of the multi-angle three-dimensional polarisation analysis capability of the D7 spectrometer as a firs step in our aim to shed further light on the phenomenon. (author). 6 refs.
Murani, A P;
Schaerpf, O;
Andersen, K;
[1]
Raphel, R
[2]
- Institut Max von Laue - Paul Langevin (ILL), 38 - Grenoble (France)
- Centre National de la Recherche Scientifique (CNRS), 38 - Grenoble (France)
Citation Formats
Murani, A P, Schaerpf, O, Andersen, K, and Raphel, R.
Atomic and magnetic correlations in a copper - 5% manganese alloy.
France: N. p.,
1997.
Web.
Murani, A P, Schaerpf, O, Andersen, K, & Raphel, R.
Atomic and magnetic correlations in a copper - 5% manganese alloy.
France.
Murani, A P, Schaerpf, O, Andersen, K, and Raphel, R.
1997.
"Atomic and magnetic correlations in a copper - 5% manganese alloy."
France.
@misc{etde_593272,
title = {Atomic and magnetic correlations in a copper - 5% manganese alloy}
author = {Murani, A P, Schaerpf, O, Andersen, K, and Raphel, R}
abstractNote = {Interest in magnetism of Cu-Mn alloys has been revived and sustained by a number of very interesting neutron investigations on single-crystal samples which show `spin-density wave` (SDW) peaks at incommensurate wave-vectors. Recently such peaks have been observed even in very dilute samples with Mn concentration as low as {approx} 0.5 at.%. The proposed interpretation by the authors that these peaks represent incommensurate antiferromagnetic ordering, therefore, questions the widely-held view that at low enough temperatures the solute spins in this and similar alloys freeze with random or quasi-random orientations, forming a spin-glass state. Atomic and magnetic correlations have been investigated in a single crystal of Cu-5 at.% Mn within the first Brillouin zone using polarised neutrons and making use of the multi-angle three-dimensional polarisation analysis capability of the D7 spectrometer as a firs step in our aim to shed further light on the phenomenon. (author). 6 refs.}
place = {France}
year = {1997}
month = {Apr}
}
title = {Atomic and magnetic correlations in a copper - 5% manganese alloy}
author = {Murani, A P, Schaerpf, O, Andersen, K, and Raphel, R}
abstractNote = {Interest in magnetism of Cu-Mn alloys has been revived and sustained by a number of very interesting neutron investigations on single-crystal samples which show `spin-density wave` (SDW) peaks at incommensurate wave-vectors. Recently such peaks have been observed even in very dilute samples with Mn concentration as low as {approx} 0.5 at.%. The proposed interpretation by the authors that these peaks represent incommensurate antiferromagnetic ordering, therefore, questions the widely-held view that at low enough temperatures the solute spins in this and similar alloys freeze with random or quasi-random orientations, forming a spin-glass state. Atomic and magnetic correlations have been investigated in a single crystal of Cu-5 at.% Mn within the first Brillouin zone using polarised neutrons and making use of the multi-angle three-dimensional polarisation analysis capability of the D7 spectrometer as a firs step in our aim to shed further light on the phenomenon. (author). 6 refs.}
place = {France}
year = {1997}
month = {Apr}
}