KFC/MAMA Magnetism of Materials

Lecturer: Jiří Tuček
Lecture: 2 hours/week
Credits: 2
Summe semester
Form of course completion: course credit, exam

• Introduction to magnetism of solids (magnetic moment, classical and quantum mechanics of spin), magnetic susceptibility, diamagnetism, paramagnetism, crystal field, magnetic interactions among magnetic moments (magnetic dipolar interactions, origin of exchange interactions, direct, indirect, double and anisotropic exchange interactions)
• Ordering of magnetic moments (ferromagnetism, antiferromagnetism, ferrimagnetism, helimagnetism and spin glasses), magnetic domains and Bloch walls (domain formation, magnetization processes, observation of magnetic domains).
• Nanomagnetism: single-domain magnetic structures (qualitative and quantitative description, Stoner-Wohlfarth model), superparamagnetism, surface and finite size effects, spin canting, quantum phase transitions, thin films and multilayer systems.
• Magnetoresistance (anisotropic, exchange and colossal magnetoresistance, quantum Hall effect).
• "Candidates" of nanostructures – Iron oxides and perovskites.
• Frustration and spin glasses – topographic and magnetic frustration, qualitative description, conditions for frustrations, spin glasses (randomness of magnetic interactions, amorphous magnets, detection of spin glasses).
• Applications of magnetic (nano)materials in various technological, medical, and environmental fields.