Lecture "Magnetism - Fundamentals and Applications" (3V/4P, 6 CP)

Content

Magnetism is a phenomenon which has been applied early after its discovery. The origin are magnetic moments contributed by a magnetic material, or electrical currents. This lecture will introduce types and concepts of magnetism in materials, based on quantitative physical models. Special emphasis will be on applications such as hard and soft magnets, data storage, magnetic sensors, and magnetic resonance imaging. The lecture is accompanied by a set of practical lab experiments focussing on selected aspects of magnetism and its applications.

Lecture

  • Magnetic Phenomena: Fundamentals
  • Diamagnetism and Paramagnetism
  • Ferro-, Ferri- and Antiferromagnetism
  • Micromagnetism: Anisotropy, Exchange, Zeeman
  • Magnetic Domains and the Magnetization Process
  • Soft and Hard Magnets
  • Nanomagnetism
  • Magnetic Data Storage
  • Magnetic Sensor Devices

Lab experiments (schedule will be organized via moodle)

  • Vibrating Sample Magnetometer (VSM)
  • SQUID Magnetometer
  • MOKE Magnetometer and Kerr Microscopy
  • Fluxgate Magnetometer
  • GMR Sensors

Literature

  • J.M.D. Coey, Magnetism and Magnetic Materials, Cambridge University Press, 2010 (e-book available in KIZ)
  • D. Jiles, Introduction to Magnetism and Magnetic Materials, Chapman and Hall(CRC), 2015 (3rd ed)
  • J. Stöhr, H.C. Siegmann, Magnetism from fundamentals to nanoscale dynamics, Springer, 2006
  • B.D. Cullity, C.D. Graham, Introduction to magnetic materials, Wiley, 2009
  • R. Gross, A. Marx, Festkörperphysik, DeGruyter, 2014 (e-book available in KIZ)

Assessment

Oral examination

Lecturers

Prof. Ulrich Herr , Micro- and Nanomaterials

Prof. Berndt Koslowski, Solid State Physics

course id

PHYS5287.0

Time and location

Lecture: Monday, 13-16, in room N24/251 ; under Corona restrictions course will be held online via moodle/BBB

1st lecture: Monday, 2.11.2020, 13-16