| ²é¿´: 898 | »Ø¸´: 4 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
| µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû | |||
[½»Á÷]
ÇóÖúÒ»¶ÎÓ¢Óï·Òë2
|
|||
It is interesting to remind that the V-values in ref. [26] are based on the approximation [40] that V of a tilt-distorted ABO3 perovskite can be empirically expressed as a decoupled combination of changes of the B-O bond length (thermal expansion V,oct of regular octahedra) and the tilting angle of BO6 octahedral framework (thermal expansion according to V = V,oct + . The thermal expansion is thus calculated by considering only the BO6 octahedra while the A-O bond is taken into account indirectly via x. We parenthesize that such an approach is similar to the so-called polyhedral approach, based on comparative crystal chemistry and developed by Hazen and Finger which has been shown to be useful in predicting elastic properties of a large number of solids [41, 42]. |
» ²ÂÄãϲ»¶
ÊÛSCIÒ»ÇøÎÄÕ£¬ÎÒ:8.O.55.1.O.54,¿ÆÄ¿ÆëÈ«,¿ÉÙ¤¼±
ÒѾÓÐ3È˻ظ´
ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8O.55.1.O.54,¿ÆÄ¿È«,¿ÉÙ¤¼±
ÒѾÓÐ4È˻ظ´
ÊÛSCIÒ»ÇøÎÄÕ£¬ÎÒ:8O5.5.1.O5.4,¿ÆÄ¿È«,¿ÉÙ¤¼±
ÒѾÓÐ3È˻ظ´
ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O.5.4,¿ÆÄ¿È«,¿É+¼±
ÒѾÓÐ3È˻ظ´
ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼±
ÒѾÓÐ4È˻ظ´
ÊÛSCIÎÄÕ£¬ÎÒ:8O5.5.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼±
ÒѾÓÐ4È˻ظ´
ÊÛSCI-T0PÎÄÕ£¬ÎÒ:8O.5.5.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼±
ÒѾÓÐ3È˻ظ´
ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O54,¿ÆÄ¿È«,¿ÉÙ¤¼±
ÒѾÓÐ5È˻ظ´
ÊÛSCIÎÄÕ£¬ÎÒ:8O5.5.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼±
ÒѾÓÐ5È˻ظ´
ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8O.55.1.O.5.4,¿ÆÄ¿ÆëÈ«,¿É+¼±
ÒѾÓÐ7È˻ظ´
» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:
ÏîÄ¿½áÌâÑéÊÕ£¬Ï£ÍûÒ»ÇÐ˳Àû
+1/970
»ªÄÏÀí¹¤´óѧ ¹âµç²ÄÁÏ·½Ïò Íõ¿¢¿É½ÌÊÚ¿ÎÌâ×éÕÐÆ¸²©Ê¿ºó¡¢²©Ê¿Éú¼°¿ÆÑÐÖúÀí
+5/420
¼±ÕпÆÑÐÖúÀí/²©Ê¿ºó
+2/124
¸£½¨Å©ÁÖ´óѧÍõÖ¾¸Õ½ÌÊÚÍÅ¶Ó³ÏÆ¸ÇàÄê½Ìʦ¡¢²©Ê¿ºó¡¢²©Ê¿Éú - ²ÄÁÏ¡¢»¯Ñ§¡¢Á¦Ñ§¡¢¸ß·Ö×
+1/41
ÖÐɽ´óѧÖз¨ºË¹¤³ÌÓë¼¼ÊõѧԺ·ÅÉäÉúÎïѧ¿ÎÌâ×éÕÐÊÕÍÆÃâÉú
+1/37
ÖÐɽ´óѧÖз¨ºË¹¤³ÌÓë¼¼ÊõѧԺ·ÅÉäÉúÎïѧ¿ÎÌâ×éÕÐÊÕÍÆÃâÉú
+1/37
¸£½¨Å©ÁÖ´óѧÍõÖ¾¸Õ½ÌÊÚÍÅ¶Ó³ÏÆ¸ÇàÄê½Ìʦ¡¢²©Ê¿ºó¡¢²©Ê¿Éú
+1/35
ÖпÆÔº´óÁ¬»¯Ñ§ÎïÀíÑо¿ËùÁõÉúÖÒÑо¿Ô±ÍŶÓÕÐÊÕ²©Ê¿ºó
+1/20
ÉîÛÚ´óѧӦÓü¼ÊõѧԺÕÐÆ¸Äý¾Û̬ÎïÀí²©Ê¿ºó
+1/15
ÉîÛÚ´óѧ2027¼¶¹âµçÐÅÏ¢¹¤³Ì/ÎïÀíѧÑо¿ÉúÍÆÃâ
+1/14
°ÄÃÅ´óѧ³ÂÐÞÆ½¿ÎÌâ×éÕÐÊÕ2027Ä격ʿ
+1/14
ÕÐÊÕ2027Äê-ÉêÇ뿼ºË²©Ê¿Éú-·ÂÉú²ÄÁÏ/ÉúÎïÄÜÔ´·½Ïò
+1/10
¹þ¹¤´óÕÔÓñΰ½ÌÊÚÕÐÆ¸ÓÅÐã˶²©Ê¿Éú¼°²©ºó
+1/9
Éù³¡ÊýֵģÄâÓëCOMSOLÓÐÏÞԪˮÉùÐźŴ¦Àí£ºÎïÀíÐÅÏ¢Éñ¾ÍøÂçPINNÓëÉî¶ÈѧϰĿ±êʶ±ð
+1/4
ÎÞÈË»ú·½Ïò ²©Ê¿ºóÓëÇàÄê½ÌʦÕÐÆ¸¹«¸æ
+1/4
Öйú¿ÆÑ§ÔºÔºÊ¿³É»áÃ÷ÕÐÊÕ2027½ì¸ß·Ö×Ó·½ÏòÍÆÃâÖ±²©Éú£¨½ØÖ¹2026Äê9ÔÂ19ÈÕ£©
+1/3
ÐÅÏ¢Ìṩ£ºÖйú¿ÆÑ§ÔºÔºÊ¿³É»áÃ÷ÕÐÊÕ2027½ìÍÆÃâÖ±²©Éú£¨½ØÖ¹2026Äê9ÔÂ19ÈÕ£©
+1/2
Ë®Àû¹¤³Ì²©Ê¿µãʦ×ʲ©Ê¿ºóÕÐÆ¸
+1/2
±±¾©Àí¹¤´óѧ-¼¯³Éµç·Óëµç×ÓѧԺ½ÜÇàÍŶÓ-Õв©Ê¿ºó
+1/1
Öйú¿ÆÑ§ÔºÔºÊ¿³É»áÃ÷ÕÐÊÕ2027½ìÍÆÃâÖ±²©Éú£¨½ØÖ¹2026Äê9ÔÂ19ÈÕ£©
+1/1
zxs1989
½ð³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 27
- Ó¦Öú: 12 (СѧÉú)
- ½ð±Ò: 1327.7
- Ìû×Ó: 2150
- ÔÚÏß: 612.2Сʱ
- ³æºÅ: 1122965
¡ï ¡ï
ll921(½ð±Ò+19): ллÄã 2011-03-26 07:21:15
ringzhu(½ð±Ò+2, ·ÒëEPI+1): »¶Ó³£À´~~ 2011-03-26 13:14:04
ll921(½ð±Ò+19): ллÄã 2011-03-26 07:21:15
ringzhu(½ð±Ò+2, ·ÒëEPI+1): »¶Ó³£À´~~ 2011-03-26 13:14:04
|
·Ò룺 ÓÐȤµÄºÍÐèҪעÒâµÄÊÇ£¬ÎÄÏ×[26]ÖÐÇã½ÇŤÇúµÄABO3¸ÆîÑ¿óµÄVÖµÊÇ»ùÓÚÕâÑùµÄ¼ÙÉ裬¼´¸ÆîÑ¿óµÄVÖµ¿ÉÒÔ¾Ñ鵨±í´ïΪB-O¼ü¼ü³¤£¨Õý°ËÃæÌåµÄÈÈÅòÕÍϵÊýV,oct£©ºÍBO6°ËÃæÌå¹Ç¼ÜµÄÇã½ÇÖ®ºÍ£¨À¨ºÅÄÚʽ×Ó²»Ï꣩¡£Òò´Ë£¬ÈÈÅòÕÍϵÊýµÄ¼ÆËãÖ»¿¼Âǵ½ÁËBO6°ËÃæÌ壬¶øA-O¼üÔòͨ¹ý¡¡±»¼ä½ÓµØ¿¼ÂÇÔÚÄÚ¡£ÎÒÃÇÏëÔÚ´ËÖ¸³ö£¬ÕâÖÖ·½·¨ÓëËùνµÄ¶àÃæÌå·¨ºÜÏàËÆ£¬¶øÕâÖÖ»ùÓڱȽϾ§Ì廯ѧºÍÓÉHazenºÍFingerÌá³öµÄ¶àÃæÌå·¨ÔÚÔ¤²âÐí¶à¹ÌÌåµÄµ¯ÐÔÐÔÄÜ·½Ãæ±»Ö¤Ã÷ÊÇÓÐÓõÄ[41,42]¡£ Áí£¬Â¥Ö÷ÊÇÄý¾Û̬ÎïÀíרҵµÄ£¬ÇëÎÊËÄÑõ»¯ÈýÌúΪʲôÓдÅÐÔÄØ£¿ÎÒÏëÖªµÀ¾ßÌåµÄ½á¹¹ÔÒò£¬ÓÐһͬѧÎÊÎÒ£¬ÎÒ²»ÊǺܶ®£¬ÍâÐУ¬¼ûЦÁË¡£ |
4Â¥2011-03-26 00:49:14
lixiaod005
гæ (³õÈëÎÄ̳)
- ·ÒëEPI: 3
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 505.7
- Ìû×Ó: 30
- ÔÚÏß: 7.3Сʱ
- ³æºÅ: 1008224
¡ï ¡ï ¡ï ¡ï ¡ï
ll921(½ð±Ò+1, ·ÒëEPI+1): ллÄ㣬ÄÑΪÄãÁË 2011-03-25 18:07:38
ringzhu(½ð±Ò-5, ·ÒëEPI-1): ±¾°æÑϽû»úÆ÷·Òë 2011-03-26 13:13:50
ll921(½ð±Ò+1, ·ÒëEPI+1): ллÄ㣬ÄÑΪÄãÁË 2011-03-25 18:07:38
ringzhu(½ð±Ò-5, ·ÒëEPI-1): ±¾°æÑϽû»úÆ÷·Òë 2011-03-26 13:13:50
| ÒªÌáÐѵÄÊÇVÐÍÎÄÏ×¼ÛÖµ¡£ [26]µÄ»ù´¡ÉϽüËÆ[40] ÇãбŤÇúABO3¸ÆîÑ¿óV¿ÉÒÔ×÷ΪһÖÖ¾ÑéÔÚBO¼ü³¤£¨ÈÈÅòÕÍ£¬¶¨ÆÚ°ËÃæÌåOCT£©ºÍÇãбµÄ±ä»¯×éºÏ±íʾÍѹ³BO6°ËÃæÌåµÄ¿ò¼Ü¡£Òò´Ë£¬ÈÈÅòÕÍÖ»¿¼ÂÇBO6°ËÃæÌ壬ÕâÖÖ·½·¨ÀàËÆÓÚËùνµÄ¶àÃæÌå·½·¨µÄ»ù´¡ÉÏ£¬±È½Ï¾§Ì廯ѧºÍ¹þɺÍÊÖÖ¸Òѱ»Ö¤Ã÷ÊÇÔÚÔ¤²âµÄ¹ÌÌå[41£¬42]´óÁ¿µÄµ¯ÐÔÐÔÖʵÄÓÐЧ¿ª·¢¡£ |
2Â¥2011-03-25 11:45:47
3Â¥2011-03-25 23:13:08
5Â¥2011-03-26 07:49:54









according to V = V,oct + . The thermal expansion is thus calculated by considering only the BO6 octahedra while the A-O bond is taken into account indirectly via x. We parenthesize that such an approach is similar to the so-called polyhedral approach, based on comparative crystal chemistry and developed by Hazen and Finger which has been shown to be useful in predicting elastic properties of a large number of solids [41, 42].
»Ø¸´´ËÂ¥