Crystal Structure of Ferromagnetic Nickel Oxide
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概要
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The determination of crystal structure was performed on the ferromagnetic nickel oxide obtained by the flame fusion method. Apart from a slight deviation of axial angle from 90℃, it has a defect tetragonal structure belonging to the space group I4_1/amd (D_<4h>^<19>), the lattice constants being a=5.899_6kX. and c=8.343_4kX. (c/a=√<2>) at 31_<.5>℃. Considering the deviation, the structure must be altered to a monoclinic one belonging to C2/m (C_<2h>^3), the lattice constants being a=5.104_4kX., b= 2.951_5kX., c=2.948_2kX. and β=125°11_<.4>' at the same temperature as above. The details of the atomic arrangements in both cases are given in the last column of Table 8. The saturation magnetization estimated under an appropriate assumption for the spin alignment agrees fairly well with the observation. Thus the comparison of the present structure with that of the ordinary nickel oxide may give us a peek into one of the processes of transition from an antiferromagnetic state to a ferromagnetic one.
- 社団法人日本物理学会の論文
- 1956-11-05
著者
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Saito Shozo
Department Of Electronics College Of Engineering University Of Osaka Prefecture
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SHIMOMURA Yasumitsu
Department of Physics, University of Osaka Prefecture
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Shimomura Yasumitsu
Department Of Physics University Of Osaka Prefecture
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Shimomura Yasumitsu
Department Of Physics College Of General Education University Of Osaka
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Saito Shozo
Department Of Physics University Of Osaka Prefecture
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KOJIMA Morio
Department of Physics, University of Osaka Prefecture
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Kojima Morio
Department Of Physics Naniwa University
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SHIMOMURA Yasumitsu
Department of Physics , Naniwa University
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