Electron State of Mn_4N Studied by Electron Diffraction

概要

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Low order electron diffraction intensity is sensitive to the electron state of a crystal. Based on this fact, an electron diffraction study has been made to determine the electron state of the ferrimagnetic interstitial compound Mn_4N by measuring its low order superstructure reflection intensities from polycrystalline films. The result shows that the electron state can be expressed as Mn^0(Mn^<+0.2>)_3N^<-0.6>. X-ray crystal structure factors obtained from the observed electron diffraction crystal structure factors not only coincide well with those determined by X-ray diffraction, but also have an accuracy of about one order higher. Electrons filling the 3d band of Mn_4N are also investigated according to the above electron state model and the magnetic moment distribution in the crystal. Hund's rule is shown not to hold for Mn_4N. Some discussions are made about the electron state determined by the diffraction method.
社団法人日本物理学会の論文
1975-10-15