Helical Spin Structure of Mn_3Si
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概要
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The magnetic structure of Mn_3Si (bcc Fe_3Al type crystal structure) at low temperatures has been determined by neutron diffraction using single crystal samples. It is found that Mn_3Si has a helical spin structure (Neel temperature 25.8 K) with a wave vector q parallel to one of <111> directions and of magnitude 0.85・1/2・2πK_<111>, which is near the boundary of the Brillouin zone. The magnetic structure is either a proper screw or a transversal sinusoidal structure and the magnetic moments at the two Mn sites are μ_<MnI>=1.72 μ_B and μ_<MnII>=0.19 μ_B. The temperature dependence of the magnitude of the wave vector q is similar to that of Cr. From these data the possibility of an itinerant electron antiferromagnetism of Mn_3Si is suggested in comparison with the SDW in Cr.
- 社団法人日本物理学会の論文
- 1975-08-15
著者
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TOMIYOSHI Shoichi
Faculty of Engineering, Ehime University
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Tomiyoshi Shoichi
The Research Institute For Iron Steel And Other Metals
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Tomiyoshi Shoichi
Department Of Materials Science And Engineering Faculty Of Engineering Ehime University
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Tomiyoshi Shoichi
Institute For Materials Research Tohoku University
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Watanabe Hiroshi
The Research Institute For Iron Steel And Other Metals Tohoku University
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Watanabe Hiroshi
The Research Institute For Iron Steel And Other Metals
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