|Owning Department/School:||Department of Physics|
|Level:||Honours (FHEQ level 6)|
|Supplementary Assessment:||Mandatory extra work (where allowed by programme regulations)|
|Requisites:||Before taking this unit you must (take PH10006 or take PH10051) and (take PH20013 or take PH20060) and (take PH20017 or take PH20063) and (take PH20029 or take PH20067)|
The aim of this unit is to explain the basic properties of magnetism, and illustrate contemporary applications of related phenomena.
After taking this unit the student should be able to:
* demonstrate a basic understanding of the origin and types of magnetic order;
* describe and explain the origins of magnetic microstructure;
* explain the magnetisation process and hysteresis;
* describe magneto-optical effects and how magnetism impacts upon transport properties.
Numeracy T/F A, Problem Solving T/F A.
Microscopic origins of magnetism. Magnetic ordering; para-, ferro-, anti-ferro and ferri- magnetism. Itinerant magnetism. The exchange interaction. Heisenberg model. Demagnetising fields and crystalline anisotropy. Domains and magnetic microstructure. M-H hysteresis curves; coercivity, soft and hard magnetic materials. Dynamic effects: magnetization reversal, Magnetic Resonance Imaging, spin resonance. Thin film magnetism. Magneto-optical phenomena; Kerr effect and applications. Magnetoelectronics and spintronics; spin valves, GMR, applications. Contemporary applications of magnetism.
PH30078 is Optional on the following programmes:Programmes in Natural Sciences