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Change in electrical resistivity due to icosahedral phase precipitation in Zr70Pd20Ni10 and Zr65Al7.5Cu7.5Ni10Ag10 glasses

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4 Author(s)
Haruyama, O. ; Department of Physics, Faculty of Science and Technology, Science University of Tokyo, Noda, Chiba 278-8510, Japan ; Miyazawa, T. ; Saida, J. ; Inoue, A.

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The glass-to-icosahedral phase transformation in Zr70Pd20Ni10 and Zr65Al7.5Cu7.5Ni10Ag10 glasses was examined by the electrical resistivity measurement performed with a heating rate of 0.67 K/s. The resistivity increased with the promotion of icosahedral precipitation in Zr70Pd20Ni10 glass. On the other hand, Zr65Al7.5Cu7.5Ni10Ag10 glass exhibited the decrement of the resistivity according to the evolution of icosahedral phase. The latter was qualitatively explained by the drop of the resistivity of supercooled liquid phase due to the transfer of oxide atoms into the icosahedral phase. Also, the low temperature resistivity experiment showed that the conductivity of glassy and icosahedral phases might obey the weak localization model of conduction electrons. © 2001 American Institute of Physics.

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Applied Physics Letters  (Volume:79 ,  Issue: 6 )