标题:Nanoscale Inhomogeneities in the Glass Transition of Zr41.2Ti13.8Cu12.5Ni10Be22.5 Bulk Metallic Glass
作者:孙民华[1];吴忠华[2];刘广荣[3];陈兴[2];陈中军[2]
作者机构:[孙民华]DepartmentofPhysics,HarbinNormalUniversity,Harbin150025//BeijingSynchrotronRadiationLaboratory,InstituteofHighEnergyPhysics,ChineseAcademyofSc 更多
通讯作者:Sun, MH
通讯作者地址:[Sun, MH]Harbin Normal Univ, Dept Phys, Harbin 150025, Peoples R China.
来源:中国物理快报:英文版
出版年:2005
卷:22
期:3
页码:664-666
关键词:纳米尺度;多相性;玻璃态;金属玻璃;超冷液体;力学处理;
摘要:By using small-angle x-ray scattering technique, correlation lengths of the density fluctuation are determined for the bulk metallic glass Zr41.2Ti13.8Cu12.5Ni10Be22.5 around the glass transition temperature Tg. Nanoscale inhomogeneities were found to exist in the supercooled liquid and glass state. The correlation length was found to vary with temperature T in an exponential law δ(T)=δ0 + A1 exp[-(T - T∞)/T1], where T∞ is the Vogel temperature, and parameters δ0, A1 and T1 were simulated to be 16.45 nm, 1.88 × 10^29 nm, and 9.65 K, respectively, in the temperature region from Tg to Tg +80 K. The correlation length of the density fluctuation obtained by the small-angle x-ray scattering method can be considered as the characteristic length of glass transition.
收录类别:SCOPUS;SCIE
WOS核心被引频次:2
Scopus被引频次:3
资源类型:期刊论文
原文链接:http://lib.cqvip.com/qk/84212X/200503/12004665.html
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