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Magnetism of Materials - NFPL305

Title:	Magnetismus materiálů
Guaranteed by:	Department of Physics of Materials (32-KFM)
Faculty:	Faculty of Mathematics and Physics
Actual:	from 2017
Semester:	summer
E-Credits:	3
Hours per week, examination:	summer s.:2/0, Ex [HT]
Capacity:	unlimited
Min. number of students:	unlimited
4EU+:	no
Virtual mobility / capacity:	no
State of the course:	taught
Language:	Czech
Teaching methods:	full-time
Teaching methods:	full-time

Guarantor:	prof. RNDr. Vladimír Šíma, CSc.

Opinion survey results Examination dates SS schedule Noticeboard

Annotation -

Last update: doc. RNDr. Josef Pešička, CSc. (31.03.2015)

The origin and nature of the magnetic moment (classical vs quantum approach, free ion, solid state). Diamagnetism and paramagnetism. Interactions in magnetic systems. Magnetic ordering, magnetic structures. Magnetocrystalline anisotropy. Magnetization processes in ferromagnets, demagnetizing field. Permanent magnetic materials.

Course completion requirements -

Last update: prof. RNDr. Vladimír Šíma, CSc. (10.06.2019)

The condition for the completion of the course is passing an oral exam.

Literature - Czech

Last update: prof. RNDr. Vladimír Šíma, CSc. (26.02.2018)

1. N. W. Ashcroft, N. D. Mermin, Solid state physics, Sounders Coll. Publishing 1988

2. S. Blundell, Magnetism in Condensed Matter, Oxford University Press, 2001

3. S. Krupička : Fyzika feritů a příbuzných magnetických kysličníků, Academia, Praha, 1969

4. Supermagnets, Hard Magnetic Materials (eds. G. J. Long, F. Grandjean) - NATO ASI Series, C, Vol. 331, Kluwer Academic Publishers, 1991

5. B. Sedlák, I. Štoll, Elektřina a magnetismus, Academia, Praha, 2002

Teaching methods -

Last update: prof. RNDr. Vladimír Šíma, CSc. (10.06.2019)

lecture

Requirements to the exam -

Last update: prof. RNDr. Vladimír Šíma, CSc. (10.06.2019)

The exam is oral one, the extent of the required knowledge corresponds to the syllabus of the lecture in the extent presented at the lecture.

Syllabus -

Last update: prof. RNDr. Vladimír Šíma, CSc. (30.03.2015)

1. Atomic susceptibility

Classical microscopic theory - Lorentz equations , Hamilton formalism , statistical averaging of the magnetic moment , Miss van Leeuwen theorem.

Quantum approach - the correspondence principle, spin , spin-orbit interaction. Free ion - electron configuration, terms, multiplets.

2. Diamagnetism, paramagnetism

Larmor diamagnetism, van Vleck's paramagnetism, Brillouin function. Curie law in solids. Pauli paramagnetism, diamagnetism of itinerant electrons.

3. Electron interactions, magnetic ordering

Dipolar interaction, exchange interactions, types of the exchange, crystal field. Magnetic structures. Spin waves, critical phenomena.

4. Ferromagnetism

Demagnetizing field, magnetocrystalline anisotropy, domain structure. Magnetization processes, hysteresis loop. Permanent magnetic materials .