SHORT-RANGE ORDER IN ALPHA-BRASS
SHORT-RANGE ORDER IN ALPHA-BRASS
复制标题
DOI：
10.1103/physrevb.41.1727
复制
发表时间：
1990-02-01
影响因子：
3.7
通讯作者：
BUHRER, W
中科院分区：
文献类型：
--
作者：
REINHARD, L;SCHONFELD, B;BUHRER, W
淬火平衡态为3165. 1原子%用弹性漫中子散射研究了Zn单晶。短程有序强度显示出最大值，这可能与垂直于方向的费米表面的平坦部分有关。< 110>有效对势Vlmn由71个短程有序参数α lmn确定，α lmn由扩散强度拟合获得。此外，还提取了40个线性位移参数。获得了一个占主导地位的V110为1018 meV。基于MonteCarlo模拟，提出了一种具有DO23结构的有序低温相Cu3Zn，其临界温度为330K.
A quenched equilibrium state of a 31 65. 1 at.% Zn single crystal was investigated by elastic diffuse neutron scattering. The short-range order intensity showed maxima that could be related to the flat portions of the Fermi surface perpendicular to the< 110> directions. Effective pair potentials V lmn were determined from 71 short-range order parameters α lmn obtained from a fit to the diffuse intensity. Furthermore, 40 linear displacement parameters were also extracted. A dominant V 110 of∼ 18 meV was obtained. Based on a Monte Carlo simulation, an ordered low-temperature phase Cu 3 Zn with the DO 23 structure and a critical temperature of∼ 330 K is suggested.