A Model for Elastic Anomalies in K2Pt(CN)4Br0.3·3H2O
- 1 November 1979
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 47 (5) , 1403-1410
- https://doi.org/10.1143/jpsj.47.1403
Abstract
A “spin-lattice” model is proposed for K 2 Pt(CN) 4 Br 0.3 ·3H 2 O (KCP) to solve the puzzling problem of the apparent complete softening of shear modulus C 66 without any structural phase transition at low temperatures. Our model emphasizes the importance of the site II water molecules lying between bromine ions and Pt(CN) 4 complexes. Each water molecule is assumed to have three configurations, which are represented by an S =1 Ising spin. An almost complete agreement is obtained between calculation and experimental data. A marked “hardening” of C 66 at low temperatures ( T e.g. external pressure. Ultrasonic attenuation coefficient α 66 , and also C 44 , α 44 , are calculated.Keywords
This publication has 11 references indexed in Scilit:
- Specific heat of K2Pt(CN)4Br0.3 · 3H2OSolid State Communications, 1978
- Quasi-one-dimensional conductorsPhysics Reports, 1978
- Combined X-ray and neutron diffraction study of K2[Pt(CN)4]X 0.3.3H2O with X = Br, Cl(KCP) between 31 K and room temperatureActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1978
- Lattice softening in K2Pt(CN)4Br0.3·3H2OSolid State Communications, 1977
- The effects of dehydration on the magnetic properties of K2Pt(CN)4Br0.3 · xH2OSolid State Communications, 1977
- Lattice dynamics of Pt.3.2 O (KCP) studied by inelastic neutron scatteringPhysical Review B, 1976
- Crystal structure of KCP(Br) [K2Pt(CN)4Br0.30.3.2H2O] as determined by 300.deg.K x-ray and 8.deg.K neutron diffraction investigationsInorganic Chemistry, 1976
- The water content of the quasi one-dimensional conductor K2Pt(CN)4Br0.3·xH2O as a function of external water-vapor pressureSolid State Communications, 1975
- Neutron-Scattering Study of the Structural Phase Transition in the One-Dimensional Conductor PtOPhysical Review Letters, 1974
- Observation of Giant Kohn Anomaly in the One-Dimensional Conductor Pt· 3OPhysical Review Letters, 1973