TY - JOUR
T1 - Covalent bonds in AlMnSi Icosahedral quasicrystalline approximant
AU - Kirihara, K.
AU - Nakata, T.
AU - Takata, M.
AU - Kubota, Y.
AU - Nishibori, E.
AU - Kimura, K.
AU - Sakata, M.
PY - 2000/10/16
Y1 - 2000/10/16
N2 - This study used the maximum entropy method with synchrotron radiation powder data to examine the bonding nature of icosahedral clusters of 12 atoms in nonmetallic α-AlMnSi 1/1-cubic approximant phase and 13 atoms in metallic Al12Re phase, respectively. Regarding α-AlMnSi, the origin of the pseudogap is considered to be due to the covalent bonds rather than the Hume-Rothery mechanism. In the icosahedral Al12 cluster with central Re atom, the enhancement of electrical resistivity with increasing concentration of transition metals is due to the enhanced covalency between Al and transition metal.
AB - This study used the maximum entropy method with synchrotron radiation powder data to examine the bonding nature of icosahedral clusters of 12 atoms in nonmetallic α-AlMnSi 1/1-cubic approximant phase and 13 atoms in metallic Al12Re phase, respectively. Regarding α-AlMnSi, the origin of the pseudogap is considered to be due to the covalent bonds rather than the Hume-Rothery mechanism. In the icosahedral Al12 cluster with central Re atom, the enhancement of electrical resistivity with increasing concentration of transition metals is due to the enhanced covalency between Al and transition metal.
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U2 - 10.1103/PhysRevLett.85.3468
DO - 10.1103/PhysRevLett.85.3468
M3 - Article
AN - SCOPUS:0034300453
SN - 0031-9007
VL - 85
SP - 3468
EP - 3471
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
ER -