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  1¡¢castepÖе¯ÐÔ³£ÊýµÄËã·¨ÊÇÔÚ¸ø¶¨µÄһϵÁеÄÓ¦±äģʽϽøÐнṹÓÅ»¯£¬¶øÇÒÊÇÖ»ÓÅ»¯Ô­×ÓλÖ㬶ø²»ÓÅ»¯¾§¸ñ³£Êý¡£È»ºó¼ÆËãÓ¦Á¦£¬ÔÙÀûÓÃÓ¦Á¦Ó¦±ä½øÐÐÄâºÏ£¬µÃµ½µ¯ÐÔ³£Êý¡££¨²»ÖªµÀÎÒÀí½âµÄ¶Ô²»¶Ô£¬Çë´ó¼ÒÖ¸½Ì£©¡£¶ø¶ÔÓÚµ¥Ð±¾§Ïµ£¬¾§½Çbeta²»ÊÇ90¶È£¬ËùÒÔ¼ÆËã³öµÄµ¯ÐÔ³£ÊýÓ¦¸ÃºÍ×ø±êϵµÄÑ¡ÔñÓйØÏµ¡£ÎÒ²âÊÔÑ¡ÔñÁËÁ½ÖÖ×ø±êϵ£¨ÔÚorientation conventionÀïÐ޸ģ©£¬Ò»ÖÖÊÇC along Z,A in XZ plane£¨¼´YºÍACÆ½Ãæ´¹Ö±£©£¬ÁíÒ»ÖÖÊÇA along X,B in XY plane£¨¼´ZºÍABÆ½Ãæ´¹Ö±£©£¬ÏÔÈ»Á½ÖÖ×ø±êϵZ·½Ïò²»Í¬¡£È»ºó·Ö±ð½øÐе¯ÐÔÄ£Á¿µÄ¼ÆË㣬µ«ÎÒ·¢ÏÖÔÚͬһӦ±äģʽ£¬±ÈÈçZ·½Ïò¼ÓÓ¦±ä0.003£¬Á½ÖÖ×ø±êϵϼÓÓ¦±äºó£¬¾§¸ñ³¤¶ÈÍêÈ«Ïàͬ£¡£¡£¡
C along Z,A in XZ plane×ø±êϵÏÂelastic constants 21 cpingxingz 6 11.7_cij__3__1.castepÎļþÖеľ§¸ñ³£Êý£º
              Lattice parameters(A)       Cell Angles
                    a =    5.175224          alpha =   91.304789
                    b =    8.993333          beta  =  101.075310
                    c =    9.368014          gamma =   89.792157

A along X,B in XY plane×ø±êϵÏÂelastic constants 21 apingxingx 6 11.7_cij__3__1.castepÎļþÖеľ§¸ñ³£Êý£º
              Lattice parameters(A)       Cell Angles
                    a =    5.175224          alpha =   91.304789
                    b =    8.993333          beta  =  101.075310
                    c =    9.368014          gamma =   89.792157
µ«ÎÒÈÏΪÔÚ²»Í¬×ø±êϵÏ£¬¶¼¸øZ·½Ïò¼Ó0.003µÄÓ¦±äºó£¬¾§¸ñ³£ÊýÓ¦¸ÃÓÐËù²»Í¬£¡ËùÒÔÎÒ»³ÒÉÊDz»ÊÇÎÒ×ø±êϵÉèÖÃûÓжÔ!
µ«½øÒ»²½¿´£¬²»Í¬×ø±êϵÏ£¬¶¼¸øZ·½Ïò¼Ó0.003µÄÓ¦±äºó£¬¼ÆËãµÃµ½µÄÓ¦Á¦ÓÖ²»Ïàͬ¡£
ËùÒÔºÜÀ§»ó£¬castepÖÐÓ¦±äÊǰ´ÕÕʲôԭÀí¼ÓµÄ£¿£¿£¿£¿
    2¡¢¼ÆË㵯ÐÔÄ£Á¿¹ý³ÌÖÐÈç¹û½Ø¶ÏÄÜÑ¡600eV£¬ÊÕÁ²µÄ±È½ÏºÃ£¡ÈçÏ£º
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
| Parameter |      value      |    tolerance    |    units   | OK? | <-- BFGS
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
|  dE/ion   |   1.452405E-008 |   1.000000E-006 |         eV | Yes | <-- BFGS
|  |F|max   |   1.271911E-003 |   2.000000E-003 |       eV/A | Yes | <-- BFGS
|  |dR|max  |   3.237645E-005 |   1.000000E-004 |          A | Yes | <-- BFGS
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
  
BFGS: Geometry optimization completed successfully.
µ«Èç¹ûÆäËû²ÎÊý²»±ä£¬Ö»ÊǰѽضÏÄÜÌá¸ßµ½1000eV£¬ÓÅ»¯µÄ½á¹û¾Í²»ÊÕÁ²£¬»¹³öÏÖÁËÒÔϵľ¯¸æ£º
BFGS: Warning - looks like this system is as converged as possible.
       Maybe your geometry convergence tolerances are too tight?
  
BFGS: finished iteration    23 with enthalpy= -1.16912502E+004 eV
  
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
| Parameter |      value      |    tolerance    |    units   | OK? | <-- BFGS
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
|  dE/ion   |   8.287700E-008 |   1.000000E-006 |         eV | Yes | <-- BFGS
|  |F|max   |   2.499152E-003 |   2.000000E-003 |       eV/A | No  | <-- BFGS
|  |dR|max  |   4.845477E-004 |   1.000000E-004 |          A | No  | <-- BFGS
+-----------+-----------------+-----------------+------------+-----+ <-- BFGS
  
BFGS: Geometry optimization completed successfully.

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id  i  j       Cij (GPa)
1   1  1     187.87374 +/-   3.438
2   2  2     195.89126 +/-   3.629
3   3  3      62.89919 +/-   3.909
4   4  4      38.06517 +/-   1.711
5   5  5      29.04281 +/-   2.239
6   6  6      77.15969 +/-   0.653
7   1  2      47.91224 +/-   1.692
8   1  3      11.66727 +/-   2.152
9   1  4      -0.98254 +/-   0.958
10   1  5     -32.19545 +/-   1.928
11   1  6      -9.58425 +/-   0.946
12   2  3       6.24273 +/-   1.583
13   2  4       5.91387 +/-   1.170
14   2  5     -13.29736 +/-   2.272
15   2  6       2.85261 +/-   1.039
16   3  4       4.28390 +/-   1.030
17   3  5       5.48421 +/-   2.970
18   3  6      -2.06920 +/-   0.943
19   4  5      -3.76064 +/-   1.397
20   4  6     -10.32344 +/-   0.630
21   5  6      -3.20257 +/-   1.044
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