Magnetisme og magnetiske materialer


Semesterangivelse: Forårs kursus Kurset udbydes i blok 3 Kurset udbydes i skemagruppe B Kurset giver 7,5 ETCS point

 


Udgave: Forår 2013 NAT
Point: 7,5
Blokstruktur: 3. blok
Skemagruppe: B
Institutter: NBI
Uddannelsesdel: Kandidat niveau
Kontaktpersoner: Kim Lefmann Tlf: 35 32 04 76 Kontor: HCØ, D314 lefmann@fys.ku.dk, Cathrine Frandsen, Institut for Fysik, DTU
Andre undervisere: Brian Møller Andersen, E-mail: bma@fys.ku.dk
Skema- oplysninger:  Vis skema for kurset
Samlet oversigt over tid og sted for alle kurser inden for Lektionsplan for Det Naturvidenskabelige Fakultet Forår 2013 NAT
Undervisnings- periode: 4. februar 14. april, 2013
Formål: The course gives an introduction to the theory of magnetism in materials and to experimental methods to study or utilize magnetic materials.
Indhold: This course is an introduction to the field of magnetism in condensed matter. The student is introduced to the one-body and many-body problems of magnetism and to simple mean-field and reciprocal space techniques for a solution of the many-body problems. Furthermore, the students is introduced to a selection of experimental techniques, which are currently used in research projects. The physical basis of the techniques and typical data are discussed; the course does not contain laboratory work(/exercises).

The course gives an introduction to the theory of magnetism and magnetic materials, as well as to the relevant experimental techniques which are used by research groups in the Copenhagen area. There will be emphasis on current research. The course will comprise the topics: Magnetic moments in solids, magnetic interactions, magnetic order, antiferromagnetism, magnetic excitations, nuclear magnetism, magnetic nanoparticles, magnetic minerals, bulk magnetic techniques, NMR, Mossbauer spectroscopy, and magnetic neutron scattering
Målbeskrivelse: The student should be able to
- describe how and why materials have magnetic moments
- describe how and why magnetic moments in materials interact
- calculate the magnetic response of a magnetic material to an external magnetic field
- describe and visualize the different types of magnetically ordered structures (ferro- antiferro- ferri-magnets)
- calculate the magnetic phase transition temperature in the mean field model
- derive an expression for magnetic excitations (spin waves)
- explain the particular magnetic properties of nanoparticles
- describe the principles in a series of magnetic measurement techniques including magnetization, susceptibility, NMR, Mossbauer spectroscopy, and neutron scattering
Lærebøger: S. Blundell, Magnetism in condensed matter, Oxford 200
Tilmelding: Via Selvbetjeningen from November 15 to December 1
Faglige forudsætninger: Knowledge of Solid State Physics.
Eksamensform: Oral exam of approximately 25 minutes duration, without preparation. Internal censorship and grading according to the 7-point grading scale.
Re-exam: as the ordinary exam
Eksamen: Mundtlig prøve d. 8. april 2013.
Reeksamen: Mundtlig prøve d. 28. juni 2013.
Kursus hjemmeside:
Undervisnings- sprog: Engelsk
Sidst redigeret: 1/11-2012



Københavns Universitet