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[求助]
四方相FeSe的密度文献
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| 求：有关四方相FeSe密度的文献？文献中一定要给出来具体密度数值。非常感谢！！！ |
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xhtangxh
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【答案】应助回帖
感谢参与，应助指数 +1
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两个来源： 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) |
2楼2013-11-01 11:06:19
nono2009: 违规存档, 论坛禁止邮箱求助，而且求助文献必须去文献求助版 2013-11-02 12:26:58
nono2009: 屏蔽内容 2013-11-02 12:27:21
nono2009: 屏蔽内容 2013-11-02 12:27:21
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3楼2013-11-01 14:09:59
xhtangxh
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4楼2013-11-02 12:14:48
5楼2013-11-04 19:30:40
xhtangxh
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【答案】应助回帖
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Card Information Names: Iron Selenide Achavalite, syn [NR] Formula: Fe Se PDF Number: 26-795 Quality: indexed Subfiles: inorganic mineral alloy Cell and Symmetry Information System: hexagonal Space Group: P63/mmc (no. 194) a: 3.626 c: 5.940 Density (Dx): 6.530 Z: 2 Instrument Information Radiation: FeKa Wavelength: 1.9373 Filter: Mn Instrument(d): Debye-Scherrer Instrument(I): visual estimate I type: unknown Comments and Additional Information Colour: Dark gray General: Doubtful as mineral species. Unit Cell: Reference reports: a=3.636, c=5.946. Pattern: See ICSD 29308 (PDF 01-075-0608). Literature References General: Franz. Neues Jahrb. Mineral., Monatsh. 276 (1972) |
6楼2013-11-05 14:39:53
xhtangxh
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【答案】应助回帖
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1. Card Information Names: Iron Selenide Formula: Fe Se PDF Number: 65-9125 Quality: calculated Subfiles: inorganic alloy NST Cell and Symmetry Information System: hexagonal Space Group: P63/mmc (no. 194) a: 4.00 c: 5.88 Density (Dx): 5.494 Z: 2 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Instrument(I): calculated I type: peak heights I/Icor: 5.89 Comments and Additional Information MC A 29281 10305 0 Temperature factor: TF TF was not given, B set to 1.000 for calc. Polymorphism: The phase studied (NiAs type structure) was prepared by annealing of the cubic FeSe phase. Subsequent heating resulted in the formation of the 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: 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) 3. Card Information Names: Iron Selenide Achavalite, syn Formula: Fe Se PDF Number: 65-9127 Quality: calculated Subfiles: inorganic mineral alloy NST Cell and Symmetry Information System: hexagonal Space Group: P63/mmc (no. 194) a: 3.632 c: 5.910 Density (Dx): 6.630 Z: 2 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Instrument(I): calculated I type: peak heights I/Icor: 5.74 Comments and Additional Information MC L 29297 45853 1 Temperature factor: TF TF was not given, B set to 1.000 for calc. Preparation: The samples were prepared by alloying appropriate amounts of the pure elements using iron sheet and selenium shots. The mixtures were evacuated at pressures of 0.01Pa, flushed with Ti-gettered argon, sealed in double quartz capsules and heated at 1270K f TI The Magnetic and Thermoelectric Properties of NiAs-type Fe0.89Se RM Sample composition is Fe0.89Se. Literature References General: Calculated from NIST using POWD-12++ ( ) Structure: Terzieff, P., Schicketanz, H., Komarek, K. L. Monatsh. Chem. 113 519 (1982) 4. Card Information Names: Iron Selenide Achavalite, syn Formula: Fe Se PDF Number: 65-9128 Quality: calculated Subfiles: inorganic mineral alloy NST Cell and Symmetry Information System: hexagonal Space Group: P63/mmc (no. 194) a: 3.618 c: 5.927 Density (Dx): 6.662 Z: 2 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Instrument(I): calculated I type: peak heights I/Icor: 5.73 Comments and Additional Information MC L 29306 50146 1 Temperature factor: TF TF was not given, B set to 1.000 for calc. Polymorphism: Tetragonal type, hexagonal type TI X-ray analysis of the system Fe_Se RM High-temperature phase. sample composition is Fe0.98Se1.02 Literature References General: Calculated from NIST using POWD-12++ ( ) Structure: Hagg, G., Kindstrom, A. -L. Z. Phys. Chem. (B) 22B 453 (1933) |
7楼2013-11-05 14:45:45
xhtangxh
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【答案】应助回帖
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Card Information Names: Iron Selenide Achavalite, syn Formula: Fe Se PDF Number: 75-608 Quality: calculated Subfiles: inorganic mineral alloy COR FIZ Cell and Symmetry Information System: hexagonal Space Group: P63/mmc (no. 194) a: 3.61 c: 5.87 Density (Dx): 6.756 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: 5.74 Comments and Additional Information ICSD Number: 029308 RM REM M PDF 26-795. TT No R value given. TT At least one TF missing. Pattern: See PDF 00-026-0795. TI Roentgenographische Untersuchungen der Kristallstrukturen von Magnetkies, Breithauptit, Pentlandit, Millerit und verwandten Verbindungen OC Cell from J. Phys. Soc. Jpn., 11 666-670 (1956): 3.548, 5.733 (room temperature); 3.610, 5.928 (773 K). WY c a (P63/MMC) AF AX Literature References General: Calculated from ICSD using POWD-12++ (1997) Structure: Alsen, N. Geol. Foeren. Stockholm Foerh. 47 19 (1925) |
8楼2013-11-05 14:46:50
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