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cnki·ÒëÖúÊÖ°ïÖúÄ㣬׼¾§µ¥¾§£¬¸öÈËÈÏΪ·ÒëΪ׼µ¥¾§£º http://dict.cnki.net/ ££££££££££££££££££££ single quasicrystals µÄ·Òë ²éѯ½á¹û: ËÑË÷ÓÃʱ 0.062 Ãë single ¸ö±ðµÄ µ¥´ò µ¥°å µ¥ÈË quasicrystals ×¼¾§²ÄÁÏ ×¼¾§Ìå ×¼¾§ The large single decagonal quasicrystals of 0.8 mm in diameter and 10 mm in length in Al-Cu-Co-Ge alloy have been obtained by controlled unidirectional solidification.In the process of growth, all of the single quasicrystals grew preferentially along uni-orientation of solidification.The centre axis of quasicrystalline prisms is the tenfold rotational symmetry axis. Under the condition of temperature gradient about 95¡æ/ cm,the segregation will be occurred and the growing interface will be changed from... ÀûÓÿØÖÆÄý¹Ì¹ý³ÌµÄ¶¨ÏòÄý¹Ì¼¼ÊõÉú³¤³öÁËÖ±¾¶£°£®£¸³¤£±£°£í£íµÄ£Á£ì££Ã£õ££Ã£ï££Ç£åÊ®±ßÐÎ×¼¾§µ¥¾§£®ÔÚ×¼¾§Éú³¤¹ý³ÌÖУ¬ËùÓÐ×¼¾§µ¥¾§ÐγÉÁ˵¥Ò»È¡ÏòµÄÔñÓÅÉú³¤½á¹¹£¬ÆäÀâÖùµÄÖÐÐÄÖáΪʮ´ÎÐýת¶Ô³ÆÖᣮÔÚζÈÌݶÈΪ£¹£µ¡æ£¯£ã£íµÄÌõ¼þÏ£¬Ëæ×Ŷ¨ÏòÄý¹ÌËٶȵÄÔö´ó£¬Éú³¤½çÃæ³öÏֵijɷֹýÀäÔ½À´Ô½´ó£¬´Ó¶øµ¼ÖÂÉú³¤½çÃæµÄÈŶ¯Ò²Ö𽥼Ӿ粢ʹ³É·ÖÆ«Îö£¬½çÃæÐÎ̬ÓÉÆ½ÃæÏò°û×´ºÍÊ÷֦״ת»¯£¬³öÏÖ´óÁ¿·Ç×¼¾§Ï࣬×îºóÎÞ·¨Éú³¤³öËùÐèÒªµÄ¸ßÖÊÁ¿×¼¾§µ¥¾§£® ÎÄÕªÀ´Ô´ Tunneling spectroscopy measurements of AlNiCo decagonal single quasicrystals have revealed very rich fine structures in the density of states around the Fermi energy. ÔÚ¶Ô£Á£ì£Î£é£Ã£ï £Ä Ïà×¼¾§µÄ¼«µÍÎÂϵÄËíµÀ²âÁ¿Öз¢ÏÖÁ˷ḻµÄ¼â·å½á¹¹ ÎÄÕªÀ´Ô´ The measurements of thermopower in AlNiCo decagonal single quasicrystals provide a clear and direct demonstration of a strongly anisotropic electron phonon mass enhancement with the effect in the quasicrystalline plane an order higher than that along the periodic direction. ¶Ô£Á£ì£Î£é£Ã£ï£ÄÏà×¼¾§ºÍÈȵçÊÆ²âÁ¿±íÃ÷£¬ÑØ×¼¾§ÃæµÄµç£Éù×ÓÖÊÁ¿ÔöǿЧӦ±ÈÑØÖÜÆÚ·½ÏòÒª´óÒ»¸öÊýÁ¿¼¶ÒÔÉÏ |
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