View May 1997 Table of Contents .
Permanent magnets are pervasive in modern industrial societies.
They enable conversion of electrical energy to mechanical energy, they underlie microwave communications, and they constitute the active material in data-storage devices. To sustain the evolution of new and improved permanent-magnet materials, an active research enterprise is required. In this paper, the status of modern rare earth-transition metal magnets is outlined, contemporary research directions are summarized, and unresolved issues and research opportunities are enumerated. A chemical pretreatment suitable for ZnSe substrate preparation is determined from x-ray photoemission spectroscopy studies. The low temperature photoluminescence spectra recorded from homoepitaxial layers exhibit unsplit free and bound exciton transitions with strong intensities.