Autor: Fijal, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Diffuse Neutron Scattering in the $Mn_{0.4}Cu_{0.6}$ Alloy
Autorzy:: Jankowska-Kisielińska, J.
Mikke, K.
Fijał-Kirejczyk, I.
Powiązania:: https://bibliotekanauki.pl/articles/1813173.pdf
Data publikacji:: 2008-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.F-
75.30.Fv
75.40.-s
75.50.Lk
Opis:: The diffuse neutron scattering in the $Mn_{0.4}Cu_{0.6}$ alloy was measured in the temperature range 15-390K at the 3-axis neutron spectrometer at MARIA reactor in Świerk. The broad maxima of the neutron intensity were observed in the surrounding of the (0.5, 1, 0) reciprocal lattice point and other symmetry related points. The effect is similar to that observed in Mn-Cu alloys with lower Mn content at room temperature. Our results are in agreement with the earlier finding that the maxima of the short-range order incommensurate spin density wave scattering are placed at the (0.5±δ, 1, 0) reciprocal lattice point with a linear dependence of δ on the Mn concentration. In addition, some commensurate antiferromagnetic short-range order was found.
Źródło:: Acta Physica Polonica A; 2008, 113, 4; 1171-1178
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Anisotropy of the Neutron Scattering in the Paramagnetic Phase and on the Spin Waves in the $Mn_{0.71}Ni_{0.29}$ Alloy
Autorzy:: Jankowska-Kisielińska, J.
Fijał-Kirejczyk, I.
Mikke, K.
Powiązania:: https://bibliotekanauki.pl/articles/1810466.pdf
Data publikacji:: 2009-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.fm
78.70.Nx
75.30.Ds
75.40.-s
75.40.Gb
Opis:: We have confirmed the significant anisotropy of the generalised magnetic susceptibility in the paramagnetic and antiferromagnetic phase of the fcc Mn-Ni alloys. In this paper the detailed account of the experiments performed on the $Mn_{0.71}Ni_{0.29}$ alloy is given. Our main result for the paramagnetic phase is that the correlation length is larger for the direction parallel to the anisotropy axis than for the perpendicular one by a factor of 1.6. The spin-wave velocity observed at 15 K is higher for the direction parallel to the anisotropy axis than that for the perpendicular direction by a factor of 1.2. These results are similar to that for the $Mn_{0.62}Ni_{0.38}$ alloy. Our results indicate that the magnetic carriers are more localized and the magnetic interactions are less extended in alloys with higher Ni concentration.
Źródło:: Acta Physica Polonica A; 2009, 115, 1; 203-205
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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