Evidence of icosahedral short-range order in Zr[sub 70]Cu[sub 30] and Zr[sub 70]Cu[sub 29]Pd[sub 1] metallic glasses

Saksl, K.; Franz, H.; Jóvári, P.; Klementiev, K.; Welter, E.; Ehnes, A.; Saida, J.; Inoue, A.; Jiang, J.Z.
November 2003
Applied Physics Letters;11/10/2003, Vol. 83 Issue 19, p3924
Academic Journal
Change in local atomic environment during crystallization of Zr-based glassy alloys was studied by extended x-ray absorption fine structure (EXAFS) spectroscopy. The formation of icosahedral quasicrystalline phase followed by crystallization of tetragonal CuZr[sub 2] has been observed in the Zr[sub 70]Cu[sub 29]Pd[sub 1] glassy alloy during annealing up to 850 K. On the other hand, the binary Zr[sub 70]Cu[sub 30] alloy shows a single glassy to crystalline CuZr[sub 2] phase transformation. The local atomic environment of as-quenched Zr[sub 70]Cu[sub 30] alloy is matched to an icosahedral local atomic configuration, which is similar to that of the as-quenched Zr[sub 70]Cu[sub 29]Pd[sub 1] alloy and the alloy annealed at 593 K containing icosahedral phase. Considering that the supercooled liquid region appears prior to crystallization in the Zr[sub 70]Cu[sub 30] glassy alloy, the observed results support the theory claiming a strong correlation between the existence of local icosahedral short-range order and stability of the supercooled liquid state. © 2003 American Institute of Physics.


Related Articles

  • Nanoquasicrystallization of binary Zr-Pd metallic glasses. Murty, B. S.; Murty, B.S.; Ping, D. H.; Ping, D.H.; Hono, K. // Applied Physics Letters;8/21/2000, Vol. 77 Issue 8 

    The formation of an icosahedral phase during crystallization of Zr-Pd binary amorphous alloys is reported. The icosahedral phase forms in the nanocrystalline state with a grain size of about 10 nm as a metastable transient phase during the transformation from an amorphous to a crystalline state...

  • Formation of ultrafine nanostructure by crystallization of Zr[sub 52]Al[sub 6]Cu[sub 14]Ni[sub 8]Fe[sub 20] metallic glass. Mattern, N.; Ku¨hn, U.; Neuefeind, J.; Eckert, J. // Applied Physics Letters;8/21/2000, Vol. 77 Issue 8 

    The short-range order and the crystallization behavior of amorphous Zr[sub 52]Al[sub 6]Cu[sub 14]Ni[sub 8]Fe[sub 20] alloys have been investigated by means of calorimetry and x-ray diffraction. The amorphous structure transforms upon annealing without formation of long-range order. An ultrafine...

  • Low temperature specific heat of a typical glass forming alloy. Bai, Hai Yang; Luo, Jian Lin; Zhang, Jie; Chen, Zhao Jia // Journal of Applied Physics;6/1/2002, Vol. 91 Issue 11, p9123 

    The Zr[sub 41]Ti[sub 14]Cu[sub 12.5]Ni[sub 10]Be[sub 22.5] alloy in short-range order (SRO) metallic glassy, medium-range order metallic glassy, crystallized, and equilibrium crystalline states was prepared. The low temperature specific heat C[sub p] of the alloy in the different states has been...

  • On the criteria for the formation of nanoquasicrystalline phase. Murty, B. S.; Hono, K. // Applied Physics Letters;3/8/2004, Vol. 84 Issue 10, p1674 

    The formation of nanoquasicrystalline phase is reported directly from the liquid on melt spinning over a wide range of wheel velocities of 10–30 m/s in Zr–Pd system at the eutectic composition (Zr[sub 75]Pd[sub 25] alloy). The earlier studies in the Zr–Pd system (Zr[sub...

  • Direct observation of a plastic deformation autowave in a zirconium alloy. Danilov, V. I.; Zavodchikov, S. Yu.; Barannikova, S. A.; Zykov, I. Yu.; Zuev, L. B. // Technical Physics Letters;Jan98, Vol. 24 Issue 1, p12 

    An analysis is made of the evolution of local deformations during the elongation of samples of fine-grained zirconium alloy. It is established that the deformation distribution patterns exhibit ordered behavior where the types of ordering are closely related to the stages of the deformation...

  • Neutron Texture Diffractometer at China Advanced Research Reactor. Meijuan LI; Yuntao LIU; Xiaolong Liu; Gengfang Tian; Dongfeng Chen // Materials Science Forum;2014, Vol. 777, p71 

    Neutron Texture Diffractometer at CARR is the first neutron instrument for texture measurement in China. It was built through modifying a Four-Circle Diffractometer relocated from Juelich Center for Neutron Science and equipping with some necessary new components. Currently, the adjustment and...

  • Order Parameter in the Quasicrystal�Crystal Transformation. Roshal, S. B.; Lebedyuk, I. V. // Crystallography Reports;May2000, Vol. 45 Issue 3, p473 

    Some aspects of the relationship between quasicrystal and crystal structures not considered earlier are discussed. It is shown that the atomic positions in a quasicrystal lattice are intermediate between the positions of periodic incommensurate crystal lattice. For the octagonal symmetry, two...

  • A Crystallographic Model for Describing of Exact Location of Atoms in Quasicrystals. Goulliaev, V. C. // Doklady Physics;Nov2001, Vol. 46 Issue 11, p780 

    Describes a crystallographic model for describing the exact location of atoms in quasicrystals. Determination of coordinates of atoms in a quasicrystal; Illustration of the symmetry for a Penrose quasicrystal; Crystal structures exhibiting point diffraction which are aperiodic.

  • Investigation of the intrinsic conductivity of Al�Cu�Fe quasicrystals in a zero-gap semiconductor model. Prekul, A. F.; Rol�shchikov, A. B.; Shchegolikhina, N. I. // JETP Letters;2/25/97, Vol. 65 Issue 4, p359 

    Experimental proofs are obtained for the fact that the intrinsic conductivity of quasicrystals at low temperatures satisfies the T[sup 3/2] law. � 1997 American Institute of Physics.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics