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Yan_Jordan
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Сºì¶¹: ½ð±Ò+5, »ØÌû·ûºÏÒªÇó 2017-07-12 21:14:55
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Сºì¶¹: ½ð±Ò+5, »ØÌû·ûºÏÒªÇó 2017-07-12 21:14:55
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¸½¼þÖеÄcifÎļþ£¬¾ßÌåÐÅÏ¢ÈçÏ 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 |
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2017-07-12 16:01:24, 2.81 K
2Â¥2017-07-12 16:02:35
chuchu6816
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3Â¥2017-07-12 16:12:11
chuchu6816
½ð³æ (ÕýʽдÊÖ)
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4Â¥2017-07-12 16:13:25
Yan_Jordan
ľ³æ (СÓÐÃûÆø)
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chuchu6816: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¶àлÈÈÐĵÄÅóÓÑ 2017-07-12 16:43:53
chuchu6816: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¶àлÈÈÐĵÄÅóÓÑ 2017-07-12 16:43:53
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ÎÒ¶þÁË£¬¿´µ½r ÒÔΪÊÇalpha gammaÐÅÏ¢ÈçÏ£º 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 |
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2017-07-12 16:20:14, 21.77 K
5Â¥2017-07-12 16:21:52













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