STRUCTURE AND DYNAMICS OF AMORPHOUS ZR-BE ALLOYS

被引：5

作者：

BRATKOVSKY, AM ^{[1
]}

ISAKOV, SL ^{[1
]}

ISHMAEV, SN ^{[1
]}

SADIKOV, IP ^{[1
]}

SMIRNOV, AV ^{[1
]}

SYRYKH, GF ^{[1
]}

HLOPKIN, MN ^{[1
]}

CHERNOPLEKOV, NA ^{[1
]}

机构：

[1] IV KURCHATOV INST,MOSCOW 123182,RUSSIA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1993年 / 156卷

关键词：

D O I：

10.1016/0022-3093(93)90132-H

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The extensive study of the short-range order structure, atomic vibration spectrum and electronic properties of amorphous alloys Zr1-cBec (c = 0.3-0.5) is performed using neutron scattering and specific heat measurements. An increase in the Be concentration in the amorphous alloy reduced the distances between nearest similar atoms, shifted and broadened the high-energy part of the vibrational spectrum, increased the Debye temperature and decreased the density of the electron states as well as the superconducting transition temperature. An analysis of the partial radial distributions, obtained by Monte Carlo modeling, indicated that the atomic structure of the amorphous Zr-Be alloys was dominated by geometrical factors, such as the atom sizes and system composition. The density of the vibrational states calculated by the recursion method for the structural model with a large number of atoms reproduced well all the main features of the experimental spectra.

引用

页码：72 / 75

页数：4

共 12 条

[1] TOPOLOGICAL CHARACTERISTICS OF METAL METALLOID GLASSES - CRYSTAL, LIQUID, GLASS VERSUS PENROSE LATTICE [J].