โ Scribed by R.A Smith
No coin nor oath required. For personal study only.
The pressure of a system may be expanded as a power series in the density, whose coefficients are the virial coefficients. In this paper, the magnetic susceptibility of a spin-l,'2 fermion system is also expanded in powers of density. This process explicitly separates the temperature and density dependence of the magnetic susceptibility. The coefficients of this series are shown to be related to certain virial coefficients. The first (previously established) and second corrections to Curie's law are explicitly expressed in terms of second and third virial coefficients. These corrections to Curie's law are small for temperatures above 4K, but become important below that temperature. The first correction has been previously measured. Given a set of second and third virial coefficients, the importance of the second correction can be calculated immediately at any density of interest.
๐ SIMILAR VOLUMES
It is argued that the analysis of the magnetic susceptibility of icosahedral Cs,, given by Haddon and Elser in a recent Letter underestimates the aromatic character of Buckminsterfullerene. Instead, it is argued that, when compared against the best available local reference structure, the ab initio
## Abstract Measurements of the volume magnetic susceptibility of solids using the classical Gouy balance approach are hampered by variations in apparent density of the packed powder. In this paper a quantitative NMR measurement of the volume magnetic susceptibility of powdered solids is described