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Á½¸öÀ´Ô´£º 1. Card Information Names: Iron Selenide Formula: Fe Se PDF Number: 65-9126 Quality: calculated Subfiles: inorganic alloy NST Cell and Symmetry Information System: tetragonal Space Group: P4/mmm (no. 123) a: 4.18 c: 4.73 Density (Dx): 5.416 Z: 2 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Instrument(I): calculated I type: peak heights I/Icor: 9.31 Comments and Additional Information MC A 29282 10306 0 Temperature factor: TF TF was not given, B set to 1.000 for calc. Polymorphism: The phase studied (CuAu structure type) is a high temperature form of FeSe. Annealing of the low temperature cubic FeSe phase resulted first in the formation of the hexagonal (Ni As type structure) and then - tetragonal (CuAu structure type) phase. Preparation: Thin films of Fe Se were prepared by interdiffusion technique. TI Studies of structure, electrical resistivity, and modulated structures in Fe Se and Ni Se alloys. Literature References General: Calculated from NIST using POWD-12++ ( ) Structure: Srivastava, M.M., Srivastava, O.N. Acta Crystallogr., Sec. A 31A S82 (1975) 2. Card Information Names: Iron Selenide Formula: Fe Se PDF Number: 85-735 Quality: calculated Subfiles: inorganic alloy COR FIZ Cell and Symmetry Information System: tetragonal Space Group: P4/nmm (no. 129) a: 3.76500 c: 5.51800 Density (Dx): 5.723 Z: 2 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Cut Off: 17.7 Instrument(I): calculated I type: peak heights I/Icor: 6.11 Comments and Additional Information ICSD Number: 026889 TT No R value given. TT At least one TF missing. TI Roentgenuntersuchungen am System Eisen - Selen. WY c a (P4/NMMS) AF AX Literature References General: Calculated from ICSD using POWD-12++ (1997) Structure: Haegg, G., Kindstroem, A.L. Z. Phys. Chem. (B) 22 453 (1933) |
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nono2009: ÆÁ±ÎÄÚÈÝ 2013-11-02 12:27:21
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