TY - JOUR
T1 - Amorphous/crystalline transition of copper at room-temperature
AU - Fukuhara, M.
AU - Abe, H.
AU - Nishikawa, H.
AU - Takemoto, T.
AU - Xie, G.
AU - Inoue, A.
N1 - Funding Information:
This work was supported by a Grant-In-Aid for Science Research in a priority Area ‘Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology’ from the Ministry of Education, Science, Sports and Culture, Japan, and by JSPS Asian CORE Program.
PY - 2009/2/17
Y1 - 2009/2/17
N2 - When a glassy alloy Cu60.6Zr29.4Ti10.0 ribbon was immersed in weak acid HF solution at room-temperature, selective complete leaching out of the Zr and Ti elements occurred, resulting in the formation of a self-organized crystalline copper ribbon with grain size of 32 nm, by accelerated self-diffusion of Cu. Since the glassy alloy is formed by spd hybridization bonding, based on a combination of valence electrons (Eg) that exceeds the electrons (Ec) predicted by crystalline metallic bond theory, disappearance of its extra valence electrons, i.e., ΔE (Eg - Ec = 0.24 eV) for copper, due to leach-out of the Zr and Ti elements, facilitates on crystallization of the copper agglomerate.
AB - When a glassy alloy Cu60.6Zr29.4Ti10.0 ribbon was immersed in weak acid HF solution at room-temperature, selective complete leaching out of the Zr and Ti elements occurred, resulting in the formation of a self-organized crystalline copper ribbon with grain size of 32 nm, by accelerated self-diffusion of Cu. Since the glassy alloy is formed by spd hybridization bonding, based on a combination of valence electrons (Eg) that exceeds the electrons (Ec) predicted by crystalline metallic bond theory, disappearance of its extra valence electrons, i.e., ΔE (Eg - Ec = 0.24 eV) for copper, due to leach-out of the Zr and Ti elements, facilitates on crystallization of the copper agglomerate.
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U2 - 10.1016/j.cplett.2008.12.100
DO - 10.1016/j.cplett.2008.12.100
M3 - Article
AN - SCOPUS:59249084679
VL - 469
SP - 289
EP - 292
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -