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北京石油化工学院2026年研究生招生接收调剂公告
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haoshm

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[交流] 求springer外文数据库有文章La2O3: crystal structure, physical properties

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
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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
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