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lxpk

Í­³æ (³õÈëÎÄ̳)

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huazet2000

½ð³æ (ÕýʽдÊÖ)

¶à±Ú̼ÄÉÃ׹ܣº´óÔ¼1350 cm-1 ´¦Ò»¸ö    1580cm-1×óÓÒÒ»¸ö     ·å»á·ÖÁÑ
µ¥±Ú̼ÄÉÃ׹ܣº200cm-1 ´¦×óÓÒÓм¸¸ö·å  1350 cm-1 ×óÓÒÒ»¸ö    1580cm-1×óÓÒÒ»¸ö
¹ÜµÄÖÊÁ¿½Ï¸ßʱ 1350 cm-1´¦µÄ·å»á½ÏµÍ¡£

ÓÐʱ·å»áÓÐÒ»Ð©Æ«ÒÆ£¬ÈçÔÚ1350cm-1´¦Ã»ÓУ¬¶øÔÚ1344cm-1´¦ÓУ¬µ«Æ«ÒƲ»»áºÜ´ó
2Â¥2007-07-26 08:53:51
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3Â¥2007-07-26 20:27:06
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lingyun79

ľ³æ (ÖøÃûдÊÖ)

a strong sharp peak
at 1577.7 cm-1 (G line), which can be assigned to the
high-frequency E2g first-order mode, and a strong sharp
peak at 1349.9 cm-1 (D line) as well as a weak peak,
appeared as a shoulder peak of G line, at 1612.9 cm-1
(D¢ line). The origin of the D and D¢ lines has been
explained as disorder-induced features due to the finite
particle size effect or lattice distortion of graphite
crystals. Therefore, the very strong relative intensity
of the D line may be the result of a
high lattice distortion of graphite crystals in the HCNTs.
The weak peak at 1099.0 cm-1 was rarely reported
previously. The peak at 2447.0 cm-1 was frequently reported
previously, but the origin of it remains uncertain.
Here, the peak 2447.0 cm-1 seems to be the combination
of D line and the peak 1099.0 cm-1 (1349.9 + 1099.0 )
2448.9).

[ Last edited by lingyun79 on 2007-7-26 at 23:13 ]
4Â¥2007-07-26 23:11:42
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