Temperature dependence of electrical resistivity of Zr–Cu–Al–Ni–Nb bulk metallic glasses below 300 K

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 449; pp. 548 - 551
• Main Authors: Okai, D., Nanbu, A., Fukami, T., Yamasaki, T., Zhang, T., Yokoyama, Y., Motoyama, G., Oda, Y., Kimura, H.M., Inoue, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 25.03.2007; Elsevier
• Subjects: Bulk metallic glass; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Conductivity of specific materials; Disordered solids; Electrical resistivity; Electronic transport in condensed matter; Exact sciences and technology; Mesoscopic and nanoscale systems; Physics; Superconducting films and low-dimensional structures; Superconducting phase; Superconductivity; Zr 2Cu; Zr 2Ni; ZrCuAlNiNb; ZrCuAlNiNb; Superconducting phase; Zr 2Ni; Zr 2Cu; Electrical resistivity; Bulk metallic glass; Crystalline phase; Electrical conductivity; Impurity density; Zr2Cu; Superconducting transitions; Amorphous alloy; XRD; Precipitates; Metallic glasses; Transmission electron microscopy; Temperature effects; Niobium additions; Zr2Ni; Nanocrystal; Zirconium alloys
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2006.02.446

The temperature dependence of electrical resistivitiy of Zr 55Cu 30− X Al 10Ni 5Nb X (numbers indicate at.% X = 0, 1, 3 and 5) bulk metallic glasses was investigated below 300 K. For the Zr 55Cu (30− X) Al 10Ni 5Nb X alloys with X = 1, 3 and 5 consisting of nanocrystals dispersed in the amorphous matrix, the electrical resistivities decreased abruptly below approximately 2.3–2.9 K. For the amorphous Zr 55Cu 30Al 10Ni 5 alloy, the electrical resistivitiy increased with decreasing temperature from 300 K up to approximately 2.0 K. The significant decrease of electrical resistivities of nanocrystal-dispersed amorphous alloys was attributable to the zero-resistivity effect of superconducting phases contained in the alloys. The Nb addition to Zr 55Cu 30Al 10Ni 5 metallic glass was found to precipitate superconducting phases within the amorphous matrix.