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[ÇóÖú] Ru2Al5 µÄ½á¹¹ÎªÊ²Ã´¼ÙÉèΪ hexagonal ? Ru3Al µÄ½á¹¹ÎªÊ²Ã´¼Ù¶¨Îª Cubic £¿

Çë½Ì¸ßÊÖ£¬   Ru2Al5 µÄ½á¹¹ÎªÊ²Ã´¼ÙÉèΪ hexagonal ?  Ru3Al µÄ½á¹¹ÎªÊ²Ã´¼Ù¶¨Îª Cubic   ËüÃǵľ§¸ñ³£ÊýµÄÊýÖµÊÇÔõÑùÀ´µÄ ?  
      Ô­ÎÄÊÇ£º  the crystal structure of Ru 2 Al 5 is unknown.According to the structural feature, we design the possible structure: Ru 2 Al 5 -type with hexagonal structure (space group: P63/mmm, No.194). Additionally, the structure of  Fe3Al-type with cubic structure (space group: Fm-3m, No. 225) for Ru3Al ¡£
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