MAGNETISM AND MAGNETIC-MATERIALS - INTRODUCTION

This paper reviews a few main aspects of the solid state magnetism nec essary to understand magnetic properties and behaviour of magnetic mat erials. The treatment of a subject as broad as present one must necess arily be limited and incomplete. Netherless we deal with the role of m agnetism and magnetic materials in modem technology and cover some asp ects of material such as: magnetostrictive and magnetoresistive materi als, soft and hard magnetic materials, magnetic multilayers and magnet ic recording.