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L. Dobrzyński K. Blinowski S. Bednarski H. Kepa T. Giebułtowicz W. Minor S. Kraśnicki J. Kosiorowska L. Weiss 《Solid State Communications》1981,38(9):773-775
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 q? 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. 相似文献
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Electrical noise from spin fluctuations in CuMn 总被引:1,自引:0,他引:1
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