摘要:

We have developed a simple technique for modelling the structure of expanded liquid metals along the liquid vapour coexistence curve which may be characterised as a ‘correlated percolation’ method. Starting from a model for the liquid at high density, e.g. near the triple point, obtained either by molecular dynamics simulation or reverse Monte Carlo modelling, we keep the size of the model and the atomic positions fixed and remove atoms, according to criteria which depend on the coordination number distribution, until the required lower density, corresponding to a higher temperature, is reached. Small random Gaussian displacements are then added to the position of each atom to account for the increased temperature. The structure factor of the resulting model is quite close to that measured experimentally. Changes in the structure factor as the liquid expands can thus be separated into the effects of density fluctuations and temperature (or entropy).

ISSN:0031-9104    

DOI:10.1080/00319109608039822

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Excess volumes, excess viscosities and excess energies of activation for viscous flow have been determined at 298.15 K and 313.15 K by means of density and viscosity measurements for the binary mixtures of a halogenated (Br, Cl) benzene or cyclohexane with 1-butanol. The results show the influence of both the type of cyclic system and the halogen atom. At 298.15 K, the mixtures with aromatic derivatives present negative values ofVEin a wide composition range mainly corresponding to the zone rich in 1-butanol. This region diminishes at 313.15 K. The values for ηEandG*Eare negative for all mixtures at two temperatures.

ISSN:0031-9104    

DOI:10.1080/00319109608039823

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The enthalpy and the free enthalpy of formation of the melts in the system Cs2O-SiO2−Na2O are measured by mass spectrometry coupled with a Knudsen effusion cell. The measurements are performed through four quasi-binary sections at the constant SiO2molar fraction 0.5, 0.667, 0.75 and 0.85 in the temperature range (950-1600 K) using the intensity ratio method. Some phase limits have been determined. The thermodynamic behaviour of the melt is characterised by a slightly negative deviation from ideality and a symmetrical effect between Na and Cs regarding to SiO2.

ISSN:0031-9104    

DOI:10.1080/00319109608039824

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Density and viscosity measurements on the binary mixtures of methanol + 1,2-dichloroethane, methanol + 1,1,1-trichloroethane, and methanol + 1,1,2,2-tetrachloroethane binary mixtures at 303.15, 313.15 and 323.15 K are reported. The representation of the data by simple mixing rules is also studied.

ISSN:0031-9104    

DOI:10.1080/00319109608039825

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Isobaric Vapour-liquid equilibrium of then-butanol (1) +n-butylchloroacetate (2) system has been measured at 94.83 kPa. The activity coefficients are evaluated and correlated by Wilson equation.

ISSN:0031-9104    

DOI:10.1080/00319109608039826

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Fermi–liquid theory in two dimensions, for electron or hole liquids flowing through antiferromagnetic assemblies, yieldsRT1αT, whereRis the electrical resistivity andT1−1the nuclear relaxation rate. This relation holds over an appropriate temperature range for Cu spins in underdoped high Tccuprates. Here a non–Fermi–liquid phase of a strongly disordered metallic spin glass is pointed out to exhibit a relationRT1∝Tn, again over a restricted temperature range, where the exponentnhas the meanfield value of 5/4.

ISSN:0031-9104    

DOI:10.1080/00319109608039827

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0031-9104    

DOI:10.1080/00319109608039821

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor