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[ Last edited by wx318 on 2008-9-13 at 17:36 ]

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Card Information
Names:        beta-Niobium Oxide
Formula:        Nb2 O5
PDF Number:        19-862
Quality:        indexed
Subfiles:        inorganic alloy COR CP

Cell and Symmetry Information
System:        monoclinic        Space Group:        P        (no.   0)
a:        22.10        b:        7.638        c:        19.52
b:        118.3       

Instrument Information
Radiation:        CuKa         Wavelength:        1.5418           Filter:        Ni
Instrument(d):        unknown       
Instrument(I):        diffractometer        I type:        unknown



Literature References
General:        Terao. Jpn. J. Appl. Phys.    4     8 (1965)
3Â¥2008-09-13 00:27:40
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hybenben

½ð³æ (СÓÐÃûÆø)

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Card Information
Names:        alpha-Niobium Oxide
Formula:        Nb2 O5
PDF Number:        9-372
Quality:        questionable
Subfiles:        inorganic alloy

Cell and Symmetry Information
System:        monoclinic        Space Group:        P2       (no.   3)
a:        21.34        b:        3.816        c:        19.47
b:        120.3       
Density (Dm):        4.550        Density (Dx):        4.520        Z:        14

Instrument Information
Radiation:        CuKa         Wavelength:        1.5418           Filter:        Ni
Instrument(d):        diffractometer       
Instrument(I):        diffractometer        I type:        unknown


Comments and Additional Information
Deleted by:        Delete: Weissmann December 31, 1963 (for Set 15).
Melting Point:        1490
General:        High temperature modification; gamma-Nb2 O5 transforms to the alpha form irreversibly at 830 C.

Literature References
General:        Holtzberg. J. Am. Chem. Soc.   79  2039 (1957)
2Â¥2008-09-13 00:25:18
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hybenben

½ð³æ (СÓÐÃûÆø)

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wx318(½ð±Ò+10,VIP+0):ллÁË£¬¹ØÓÚalpha-Niobium Oxide ÎÒ´ÓÆäËüÎÄÏ×ÉÏ¿´ºÃÏñ27-1003¿ÉÐŶȸßÒ»µã
µÚÈý¸ö£º
Card Information
Names:        gamma-Niobium Oxide
Formula:        Nb2 O5
PDF Number:        19-864
Quality:        indexed
Subfiles:        inorganic alloy COR

Cell and Symmetry Information
System:        monoclinic        Space Group:        P        (no.   0)
a:        7.348        b:        8.962        c:        13.65
b:        115.5       
Z:        8

Instrument Information
Radiation:        CuKa         Wavelength:        1.5418           Filter:        Ni
Instrument(d):        unknown       
Instrument(I):        diffractometer        I type:        unknown



Literature References
General:        Terao. Jpn. J. Appl. Phys.    4     8 (1965)
4Â¥2008-09-13 00:28:39
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