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2Â¥2010-11-21 23:31:26
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sdluxi(½ð±Ò+5, ·ÒëEPI+1): 2010-11-22 15:09:45
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The diffuse-reflectance spectra were recorded for all samples/all annealing temperatures and interpreted with regard to X-ray diffraction (XRD), pycnometry, and 27Al magic-angle-spinning (MAS) NMR analyses. ¶ÔÍË»ðζȵÄËùÓÐÑùÆ·½øÐÐÁËÂþ·´Éä¹âÆ×²âÁ¿£¬²¢½áºÏXRD£¬²â±ÈÖØÊõÒÔ¼°27 AlºË´Å¹²Õñ¶Ô¸ÃÂþ·´Éä¹âÆ×½øÐÐÁ˽âÊÍ˵Ã÷¡£ |
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4Â¥2010-11-22 15:12:37
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ллÄúµÄ½¨Ò飬²»¹ýÎÄÕÂÊÇ·¨¹úÈËдµÄ£¬·¢±íÔÚACS Inorganic ChemistryÉÏ£¬¾ä×ÓÓ¦¸ÃûÓÐÎÊÌ⣬ËùÔÚ¶ÎÂäÈçÏ£º In this study, Zn1-xCoxAl2O4 powders, with x ranging from 0 up to 1 (the total solid solution), were elaborated by a Pechini route and then annealed at various temperatures between 800 and 1100 ¡æ. The diffuse-reflectance spectra were recorded for all samples/all annealing temperatures and interpreted with regard to X-ray diffraction (XRD), pycnometry, and 27Al magic-angle-spinning (MAS) NMR analyses. All synthesized compounds exhibit a spinel type single phase, and hereafter, the results obtained only on several compositions and for two extreme synthesis temperatures: 800 and 1100 ¡æ are discussed. A new interpretation of the color variation of these pigments versus the annealing temperature decrease is thus proposed. |
5Â¥2010-11-23 09:43:55














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