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Magnetic ordering of YFeMnO4 has been studied with Mössbauer spectroscopy in the temperature range between 4.2 K and 300 K on the conditions of gamma rays parallel to and perpendicular to thec-axis. It is revealed that the spin system orders like a Heisenberg spin system in a triangular antiferromagnet with an anisotropic axis parallel to thec-axis. 相似文献
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Eiji Kita Ayumu Hatanaka Kenji Nakajima Masakazu Nishi Kiiti Siratori 《Journal of Physics and Chemistry of Solids》2007,68(11):2166-2169
For the determination of the magnetic structure, elimination of the magnetic domains is indispensable and the appropriate stress will be effective when the crystal has a structural transformation at TN. The effect of uniaxial stress cooling on the neutron magnetic scattering in a ZnCr2O4 single crystal was studied. The pressure axis was set parallel to the [1 0 0] or [0 0 1], parallel or perpendicular to the diffraction plane, (0 0 1). The [1 0 0] pressure cooling increases one half-integer spots along the [1 0 0], whereas decreases others. The [0 0 1] pressure cooling increases two half-integer spots in the (0 0 1) plane, whereas decreases one half-integer spots. 相似文献
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M. Tanaka J. Akimitsu Y. Inada N. Kimizuka I. Shindo K. Siratori 《Solid State Communications》1982,44(5):687-690
Anomalies were found in electrical conductivity and specific heat at the two-step transition in the stoichiometric YFe2O4. It is concluded that the transition is a new type of Verwey transition: i.e., ordering of ionic charge, Fe2+ and Fe3+, accompanied by lattice distortion and antiferromagnetic spin ordering. 相似文献
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Products of normal spaces with metric spaces 总被引:2,自引:0,他引:2
Kiiti Morita 《Mathematische Annalen》1964,154(4):365-382
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Several results on rectangular products in the sense of B.A. Pasynkov will be obtained, one of which asserts that for a Tychonoff space X, X × Y is rectangular for any space Y iff X is locally compact and paracompact. 相似文献
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The endomorphism ring theorem for Frobenius extensions 总被引:1,自引:0,他引:1
Kiiti Morita 《Mathematische Zeitschrift》1967,102(5):385-404
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