Rotor phases in compound semiconductors

被引：0

作者：

Price, David Long ^{[1
]}

Saboungi, Marie-Louise ^{[1
]}

Howells, W.Spencer ^{[1
]}

机构：

[1] Argonne Natl Lab, Argonne, United States

来源：

Physica B: Condensed Matter | 1995年 / 213-214卷

关键词：

Cesium compounds - Crystals - Molecules - Neutron scattering - Order disorder transitions - Phosphorus compounds - Sodium compounds - Systems (metallurgical) - Thermal effects;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Quasielastic neutron scattering is used to study the disordering processes in two classes of semiconductors: I-IV Zintl compounds and the phosphorous-selenium system. Two alkali-metal-polyvalent metal Zintl compounds, CsPb and NaSn, exhibit a two-stage melting process with high-temperature solid phases characterized by rapid dynamical disorder. In CsPb this disorder is clearly associated with rapid reorientations of polyanions with the cations participating in the dynamical disorder on the same time scale. In NaSn the disorder is associated with fast reorientations of the polyanions closely coupled to a slower migration of the cations. The two high-temperature solid phases of the molecular crystal P4Se3 are confirmed to be rotor phases with small but significant differences in the reorientational motions in the two phases.

引用

页码：547 / 551