Measurements of angular dependence of reversible parallel and transverse susceptibility in magnetic nanoparticle systems.

摘要

Reversible magnetic susceptibility is a characteristic of magnetic materials which can yield valuable information about anisotropy. A new method of measuring this characteristic has made it possible to take measurements of the parallel and transverse components of the magnetic susceptibility tensor for small samples and allows for the manipulation of their orientation with respect to the external magnetic field. These measurements have yielded information which can be correlated with the current theory and addresses inconsistencies which have been observed in earlier measurements. A means of normalizing the data has been devised which allows the comparison of data from the different samples which were investigated.