ORDER-DISORDER PHASE-TRANSITION IN POTASSIUM THIOCYANATE

被引：23

作者：

BLASCHKO, O

SCHWARZ, W

SCHRANZ, W

FUITH, A

机构：

[1] Institut für Experimentalphysik, Universität Wien, A-1090 Wien

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.44.9159

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The order-disorder phase transition in KSCN near 142-degrees-C, which is connected with the head-tail orientation of the linear SCN molecules, is investigated by diffuse-neutron-scattering techniques. The results show a transition from a long-range-ordered structure to a short-range-ordered state which persists up to temperatures near the melting point. Above T(c), near the (100) superlattice point, a Lorentzian intensity distribution is observed whose temperature dependence shows a mean-field behavior. The short-range-ordered state is described by an ensemble of ordered microdomains.

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页码：9159 / 9163

页数：5

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