Spin waves in Fe3-xMnxSi ordered alloys

L. Dobrzyński, K. Blinowski, S. Bednarski, H. Kepa, T. Giebułtowicz, W. Minor, S. Kraśnicki, J. Kosiorowska, L. Weiss

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Spin wave dispersion relations in Fe3-xMnxSi ordered alloys have been measured by neutron scattering for alloys with x = 0.04 and x = 0.18. The dispersion relations have been found to be quadratic in the magnon wavevector q̄ up to about half of the Brillouin zone along [111] direction. The measured values of the spin wave stiffness constant are 169±7 meV Å02 and 207±7 meV Å02 for samples with x = 0.18 and x = 0.04, respectively. The energy gap found from the rough data turned out to be almost totally due to the triple-axis spectrometer resolution properties. The nearest neighbour exchange integral for FeFe interaction, calculated from the above data, equals to 22.5±1.0 meV.

Original languageEnglish
Pages (from-to)773-775
Number of pages3
JournalSolid State Communications
Issue number9
StatePublished - Jun 1981
Externally publishedYes


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