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chuchu6816

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[ÇóÖú] ÇóÖú r-Al2O3 µÄ¾§Ìå½á¹¹ ÒÑÓÐ1È˲ÎÓë

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Yan_Jordan

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Mineral name        Corundum
Formula        Al2 O3
Calculated formula        Al12 O18
Title of publication        A structural investigation of alpha-Al2O3 at 2170 K T = 300 K
Authors of publication        Ishizawa, N.; Miyata, T.; Minato, I.; Marumo, F.; Iwai, S.
Journal of publication        Acta Crystallographica, Section B
Year of publication        1980
Journal volume        36
Pages of publication        228 - 230
a        4.754 Å
b        4.754 Å
c        12.99 Å
¦Á        90¡ã
¦Â        90¡ã
¦Ã        120¡ã
Cell volume        254.248 Å3
Ambient diffraction temperature        300 K
Number of distinct elements        2
Hermann-Mauguin symmetry space group        R -3 c :H
Hall symmetry space group        -R 3 2"c
Has coordinates        Yes
Has disorder        No
Has Fobs        No

» ±¾Ìû¸½¼þ×ÊÔ´Áбí

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  • 2017-07-12 16:01:24, 2.81 K
2Â¥2017-07-12 16:02:35
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chuchu6816

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by Yan_Jordan at 2017-07-12 16:02:35
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Mineral name        Corundum
Formula        Al2 O3
Calculated formula        Al12 O18
Title of publication        A structural investigation of alpha-Al2O3 at 2170 K T = 300 K
Authors of p ...

лл¡£ÇëÎÊÓÐgamma Al2O3Âð£¿Õâ¸öÊÇalphaµÄ¡£
3Â¥2017-07-12 16:12:11
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chuchu6816

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by Yan_Jordan at 2017-07-12 16:02:35
¸½¼þÖеÄcifÎļþ£¬¾ßÌåÐÅÏ¢ÈçÏÂ


Mineral name        Corundum
Formula        Al2 O3
Calculated formula        Al12 O18
Title of publication        A structural investigation of alpha-Al2O3 at 2170 K T = 300 K
Authors of p ...

лл£¬ÇëÎÊÓÐgammaµÄÂð£¿Õâ¸öÊÇalphaµÄ¡£
4Â¥2017-07-12 16:13:25
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Yan_Jordan

ľ³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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chuchu6816: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¶àлÈÈÐĵÄÅóÓÑ 2017-07-12 16:43:53
ÒýÓûØÌû:
3Â¥: Originally posted by chuchu6816 at 2017-07-12 16:12:11
лл¡£ÇëÎÊÓÐgamma Al2O3Âð£¿Õâ¸öÊÇalphaµÄ¡£...

ÎÒ¶þÁË£¬¿´µ½r ÒÔΪÊÇalpha
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Common name        gamma alumina
Formula        Al2.67 O4
Calculated formula        Al2.6653 O4
Title of publication        ¦Ã-Alumina: a single-crystal X-ray diffraction study
Authors of publication        Ľubom¨ªr Smrčok ; Vratislav Langer; Jan Křesťan
Journal of publication        Acta Crystallographica Section C
Year of publication        2006
Journal volume        62
Journal issue        9
Pages of publication        i83 - i84
a        7.9382 ¡À 0.0001 Å
b        7.9382 ¡À 0.0001 Å
c        7.9382 ¡À 0.0001 Å
¦Á        90¡ã
¦Â        90¡ã
¦Ã        90¡ã
Cell volume        500.226 ¡À 0.011 Å3
Cell temperature        173 ¡À 2 K
Ambient diffraction temperature        173 ¡À 2 K
Number of distinct elements        2
Hermann-Mauguin symmetry space group        F d -3 m :2
Hall symmetry space group        -F 4vw 2vw 3
Residual factor for all reflections        0.028
Residual factor for observed reflections        0.0265
Weighted residual factors for the observed reflections        0.0978
Weighted residual factors for all reflections included in the refinement        0.1004
Goodness-of-fit parameter for observed reflections        0.983
Diffraction radiation wavelength        0.71073 Å
Diffraction radiation type        MoK¦Á
Has coordinates        Yes
Has disorder        No
Has Fobs        Yes

» ±¾Ìû¸½¼þ×ÊÔ´Áбí

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  • 2017-07-12 16:20:14, 21.77 K
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