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emilyoyang
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¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
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zyqh: ½ð±Ò+5, ¡ïÓаïÖú 2015-12-21 15:47:36
liliangfang: ½ð±Ò+1, лл½»Á÷ 2015-12-24 20:40:03
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
zyqh: ½ð±Ò+5, ¡ïÓаïÖú 2015-12-21 15:47:36
liliangfang: ½ð±Ò+1, лл½»Á÷ 2015-12-24 20:40:03
|
Try to reduce the POTIM. e.g POTIM = 0.005 POTIM refers to the ion displacement step. If you choose too large step (POTIM), a large stressing force will be applied to the crystal structure, and accordingly, the crystal structure will be broken. That is why you get negative values in tensor matrix. Note that, a negative value in tensor matrix does not always indicate you get the wrong results. In some cases (low symmetry), the negative value in tensor matrix will show up. Keep in mind that, the main tensor should never be negative.(Cii, i=1...6). |
6Â¥2015-12-21 15:07:44
tianlan9057
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2Â¥2015-12-20 22:35:29
jimsmart
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¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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zyqh: ½ð±Ò+5, ¡ïÓаïÖú 2015-12-21 12:55:53
liliangfang: ½ð±Ò+1, лл½»Á÷ 2015-12-24 20:39:57
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
zyqh: ½ð±Ò+5, ¡ïÓаïÖú 2015-12-21 12:55:53
liliangfang: ½ð±Ò+1, лл½»Á÷ 2015-12-24 20:39:57
|
ÄãËã³öµÄ½á¹û,ÊÇÒ»ÖÖ״̬µÄÏÔʾ,¼ÈÈ»Ëã³öÀ´Á˽á¹û,¾ÍÓÐÒ»¶¨µÄºÏÀíÐÔ; ¹Ø¼üÊÇÄãÔõôȥ½âÊÍËüºÍ½â¶ÁËüËù´øÀ´µÄÐÅÏ¢; Äã¸Ä±äÁ˲ÎÊý,½á¹û·¢Éú±ä»¯Ò²ÊÇ×ÔÈ»¶øÈ»µÄÊÂÇé,ûÓб仯ÄÇ²Å½ÐÆæ¹Ö; µ¯ÐÔ³£ÊýÄÜ·ñΪ¸ºÊý, ÒªÓ÷¢Õ¹µÄÑ۹⿴. Èç¹û±ðÈË˵¿ÉÒÔ»ò²»¿ÉÒÔ,Ö»ÊÇÒ»¼ÒÖ®´Ç; Èô´íÁË,Äã»á¹ÖËû,¿ÉÄÇÓֺαØÄØ? Èô¶ÔÁË,Ò²²»¹ýÊÇÊʺÏÁËÒ»¸öÎÊÌâ,¶ÔÌá¸ßÄãµÄ¼ÆËãˮƽÓÖûÓÐÌ«´óµÄ°ïÖú. |
3Â¥2015-12-21 08:32:02
zyqh
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4Â¥2015-12-21 12:48:33















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