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求springer外文数据库有文章La2O3: crystal structure, physical properties
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| springer外文数据库有文章La2O3: crystal structure, physical properties。万分感谢。 |
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2楼2006-11-18 23:23:46
阿梨子
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Card Information Names: Lanthanum Oxide Formula: La2 O3 PDF Number: 5-602 Quality: star Subfiles: inorganic alloy NBS CP EDU SCM Cell and Symmetry Information System: hexagonal Space Group: P-3m1 (no. 164) a: 3.9373 c: 6.1299 Density (Dx): 6.573 Z: 1 Instrument Information Wavelength: 0 Comments and Additional Information Source: Sample from Fairmount Chemical Company. Colour: Colorless Analysis: Spectroscopic analysis: <0.01% Ca, Mg, Si; <0.001% Al, Cu, Fe, Pb. Temperature: Pattern taken at 26 C. Preparation: Sample was annealed at 1200 C for one hour and mounted in petrolatum to prevent reabsorption of C O2 + H2 O. General: Merck Index , 8th Ed., p. 608. RL Opaque mineral optical data on specimen from Nanseke, Uganda: R#3R%=14.2, Disp.=Std. VH VHN#1#0#0=782-813. General: Pattern reviewed by Holzer, J., McCarthy, G., North Dakota State Univ., Fargo, ND, USA, ICDD Grant-in-Aid (1990. Validated by calculated pattern except for the following: 2.278 23 102; 1.968 28 110; 1.753 23 103. Calculated pattern indicates that the following reflections might be observable: 6.130 <1 001; 2.043 <1 003; 1.8744 <1 111; 1.4177 <1 113; 1.2260 <1 005. Literature References General: Swanson, Fuyat. Natl. Bur. Stand. (U.S.), Circ. 539 III 33 (1954) RL IMA Commission on Ore Microscopy QDF ------------------------------------------------------------------------ Card Information Names: Lanthanum Oxide Formula: La2 O3 PDF Number: 40-1281 Quality: star Subfiles: inorganic alloy Cell and Symmetry Information System: hexagonal Space Group: P-3m1 (no. 164) a: 4.057 c: 6.430 Z: 1 Instrument Information Wavelength: 0 Comments and Additional Information Melting Point: 2250 C Colour: White General: Sintered sample without additives. General: Neutron experiment in a specially designed furnace. Temperature: Taken at 2030(20) C. Pattern: To replace 24-554. Pattern: See ICSD 100208, 100209, 100210, 100214, 100215 (PDF 83-1348, 83-1349, 83-1350, 83-1354, 83-1355). Literature References General: Aldebert, P., Institut de RechercheFondamentale, Grenoble, France. Private Communication (1988) Unit Cell: Aldebert, P., Traverse, J. Mater. Res. Bull. 14 303 (1979) ------------------------------------------------------------------------ |
3楼2006-11-27 21:49:29