Vorlesung Magnetismus I - Lecture Magnetism I
Fabian Samad (E-Mail: fabian.samad@…)
Content:
The focus of this elective module is the magnetism of (ferro) magnetic materials, its origin and the phenomena resulting from it. The lectures will cover the following topics:
- introduction to and history of magnetic materials
- electro-magnetism with a focus on magneto-statics and magnetic materials
- quantum mechanical foundations of magnetic materials
- from magnetic moments in atoms and ions to the magnetism in solid state physics
- spontaneous magnetization of magnetic materials (ferromagnetism)
- mico-magnetic energies of ferromagnetic materials: demagnetization, exchange and anisotropy
- magnetic field reversal and domain formation
Organisational:
In the WS 2021/2022 we offer the Magnetism I lecture (or “Grundlagen magnetischer Materialien”, i.e. “Basic introduction to magnetic materials”) as well as the corresponding Magnetism I exercise class either in a purely online or hybrid (in person/online mixed) format.
We will decide about the final format in the first couple of lecture weeks, once we know how many people attend the lecture meetings on a regular basis and depending on the availability of a suitable lecture room that will fit the number of participants in compliance with the corresponding corona rules. If it is not possible to find a suitable room, then we will continue the lecture and exercise class in an online format as we did the past 3 semesters.
So the first two weeks we will have our meetings in any case via online teleconference call. We will hold the first organizational teleconference call on 14.10.2021 at 09:15. Please use the following link to log into the teleconference call: Access the online lecture
Please bring your questions and suggestions to this first teleconference call, where we will provide more information about the content and the format of the class.
The current plan is to provide weekly lecture recordings, each about 90 minutes in average length. These recordings will be provided on our webpages. You should listen to the weekly lecture recordings at your convenience until the next weekly live feedback session at our designated “Magnetism I” lecture time slot on Mondays at 09:15 AM. During the feedback sessions (which will be either live, in presence or live, via teleconference call) we will do a short quiz about the main topics of the previous recorded lecture and you will have the opportunity to ask questions about the lecture content. We can then go to the corresponding slides and discuss your questions in detail and hopefully resolve any issues.
Important Notice:
Often it is not possible to avoid time-slot conflicts completely for every possible timetable constellation, in particular since this class is offered to physics, AFM and SeKo students in parallel.
For the case you are interested to attend this lecture/exercise class and get credit for it, but you have a conflict in your lecture schedule with the current time slots and thus are not able to attend the first organizational lecture meeting on 14.10.2021 at 09:15, then please contact me prior to the first lecture meeting via Email ( fabian.samad@…) and let me know. Often it is possible to adjust the time slot of the lecture/exercise class in the first couple of lecture weeks (when we know who is interested in attending the lecture) to avoid an overlap with other lectures. So please let me know if this is the case for you and we will try to adjust the lecture/exercise class time slot correspondingly.
Recorded Lectures:
Lecture of 14.10.2021 (Organization+motivation, history of magnetism)
Lecture of 21.10.2021 (Magnetism in a nutshell)
Lecture of 28.10.2021 (Magnetostatics)
Lecture of 04.11.2021 (Magnetostatics with materials)
Lecture of 11.11.2021 (Elements of quantum mechanics)
Lecture of 18.11.2021 (Spin-orbit coupling, Lande factor etc)
Lecture of 25.11.2021 (Multi electron systems)
Lecture of 02.12.2021 (Localized and delocalized electrons)
Lecture of 09.12.2021 (Excursion on Orbitals, Crystal fields)
Lecture of 16.12.2021 (Remaining parts on crystal fields)
Lecture of 06.01.2022 (Band magnetism, Stoner criterion)
Lecture of 13.01.2022 (Magnetic energies)
Lecture of 20.01.2022 (Magnetic energy competition and length scales)
Lecture of 27.01.2022 (Magnetic field reversal)