Condensed Matter National Laboratory

• "Magnetic Materials, Fundamentals, Properties, and Applications"
This course is an introduction to the recent developments in the field of magnetic materials and spintronics. Mainly focused on the experimental aspects of the field, it starts from the origin of the magnetism in atoms and ions to various magnetic phase in solids. An introduction to the application of magnetic materials will be discussed in the final sessions. This course is expected to be continued by a course in Nanomagnetism in the next semester. Basic knowledge on quantum physics, thermodynamics and solid state physics is mandatory for the course and it is consisted of the following sections:
  A)Atomic model
I. Atomic magnetism From Maxwell’s equations to the magnetic moment.
II. Orbital angular momentum and orbital magnetic moments.
III. Spin. Spin-orbit interaction. Hund rules.
IV. Magnetism of ions: spin and orbital magnetic moment.
V. Paramagnetism. Diamagnetism.
VI. Magnetic moments of transition and rare earth elements.
  B)Magnetism in solids
VII. Microscopic origin of ferromagnetism From the Hydrogen molecule to the Heisenberg hamiltonian.
VIII. Superexchange, double exchange and itinerant ferromagnets. Stoner criterion.
IX. Ferromagnetic metals for everyday applications.
X. Slater-Pauling curves interpreted by a rigid band model.
XI. Phenomenology of magnetism Weiss approach.
XII. Magnetic domains. Domain walls.
XIII. Magnetization approach.
XIV. Magnetic anisotropy.
XV. Magnetoelastic coupling. Magnetostriction.
XVI. Calculation of the equilibrium configuration in strong out-of-plane anisotropy magnetic materials.
XVII. Applications for spintronics.
XVIII. Dynamics in ferromagnetic materials. Spin waves.
XIX. Magnetization dynamics, Landau-Lifshitz-Gilbert (LLG) equation and ferromagnetic resonance.
XX. Magnetocaloric materials for efficient cooling.


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