Inhomogeneity and glass-forming ability in the bulk metallic glass Pd{sub 42.5}Ni{sub 7.5}Cu{sub 30}P{sub 20} as seen via x-ray spectroscopies
- Center for Materials Research Using Third-Generation Synchrotron Radiation Facilities, Hiroshima Institute of Technology, Hiroshima 731-5193 (Japan)
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046 (Japan)
- Department of Materials Science and Engineering, Graduate School of Engineering, Kyoto University, Kyoto 606-8501 (Japan)
- Graduate School of Information Sciences, Hiroshima City University, Hiroshima 731-3194 (Japan)
- Institut Neel, CNRS, F-38042 Grenoble Cedex (France)
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560 (Japan)
- Physikalische Chemie, Fachbereich Chemie, Philipps Universitaet Marburg, D-35032 Marburg (Germany)
- R and D Institute of Metals and Composites for Future Industries, Sendai 980-8577 (Japan)
Core-level photoemission spectroscopy and anomalous x-ray scattering (AXS) measurements were performed for the Pd{sub 42.5}Ni{sub 7.5}Cu{sub 30}P{sub 20} (PNCP) excellent metallic glass to investigate the chemical nature and local atomic structure, and the results were compared to those in Pd{sub 40}Ni{sub 40}P{sub 20} and Pd{sub 40}Cu{sub 40}P{sub 20}. The P 2p core levels clearly separate into two states, indicating that the P atoms have two different chemical sites, which is a strong experimental proof for the existence of an elastic inhomogeneity. From the AXS close to the Pd K edge, a specific Pd-P-Pd atomic configuration was observed, which is related to the stable state in the P 2p core levels. All of the core levels measured in PNCP have the deepest binding energies among these glasses, indicating the most stable electronic states. Local structure around the P atoms is discussed by the AXS data and a metastable crystal appeared in a supercooled metallic alloy close to PNCP.
- OSTI ID:
- 21294466
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 80, Issue 17; Other Information: DOI: 10.1103/PhysRevB.80.174204; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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