No abstract

We use our measurements of the magnetization and the magnetoresistance for very small superparamagnetic particles of Co to obtain the low-temperature value of the magnetic anisotropy energy density, CϷ3ϫ10 8 erg/cm 3 . This is nearly two orders of magnitude larger than the corresponding value for C for bulk Co. The enormous enhancement of C for very small particles of Co is consistent with results previously reported for very small particles of Fe and of FeNi.

The magnitude of the resistivity and thermopower of Ca-Al metallic glasses has been calculated using the Faber-Ziman model but including contributions from quantum interference effects (QIE s), or "2kF" scattering. These calculated magnitudes are compared with experimental values for the resistivity. It is shown that almost half the increase in resistivity, to nearly 450 JMQ cm, with increasing Al concentration, can be explained by QIE's.

No abstract

No abstract