博文
Atomic-level structure and properties of CoBmetallic glasses
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a Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong, China
b Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Shanghai 200624, China
The atomic structure and the origins of the magnetic properties of two ternary CoBSi metallic glasses were revealed.
•The atomic structures were elucidated by state-of-the-art extended X-ray absorption fine structure spectroscopy (EXAFS) combining with ab initio molecular-dynamics (AIMD) techniques.
•The experimental spectra were in good agreement with the predictions of ab initio full multiple scattering theory using the FEFF8.4 code.
•The origin of these magnetic behaviors was discussed in view of the EXAFS results and atomic structures of the metallic glasses.
•These two metallic glasses consist of different clusters, and hence different magnetic properties, which are dominated by short-range orders (SROs).
Two CoSiB metallic glasses of low Co contents, which consist of different clusters, have recently been developed by addition of solute atoms. In this work, the atomic structure and the magnetic properties of the two CoBSi metallic glasses were elucidated by state-of-the-art extended X-ray absorption fine structure spectroscopy (EXAFS) combining with ab initio molecular-dynamics (AIMD) computational techniques. Besides, the origin of these magnetic behaviors was discussed in view of the EXAFS results and atomic structures of the metallic glasses.
The atomic structure and the origins of the magnetic properties of two ternary CoBSi metallic glasses were elucidated by state-of-the-art extended X-ray absorption fine structure spectroscopy (EXAFS) combining with ab initio molecular-dynamics (AIMD) techniques.
Metallic glass;
Extended X-ray absorption fine structure spectroscopy (EXAFS);
Ab initio molecular-dynamics (AIMD)
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