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Course, academic year 2022/2023
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NMR in Magnetically Ordered Materials - NFPL175
Title: NMR v magneticky uspořádaných látkách
Guaranteed by: Department of Low Temperature Physics (32-KFNT)
Faculty: Faculty of Mathematics and Physics
Actual: from 2020
Semester: winter
E-Credits: 3
Hours per week, examination: winter s.:1/1, C+Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
Virtual mobility / capacity: no
State of the course: taught
Language: Czech
Teaching methods: full-time
Guarantor: doc. RNDr. Vojtěch Chlan, Ph.D.
prof. RNDr. Helena Štěpánková, CSc.
Annotation -
Last update: T_KFNT (23.05.2003)
Application of nuclear magnetics resonance to ferro-, ferri- and antiferromagnetic systems. Excitation and detection of signal of extremely broad lines. Study of crystal, electronic and magnetic structure.
Aim of the course -
Last update: T_KFNT (11.04.2008)

Nuclear magnetics resonance in ferro-, ferri- and antiferromagnetic systems.

Course completion requirements -
Last update: prof. RNDr. Helena Štěpánková, CSc. (14.06.2019)

Oral exam. Credit is a prerequisite for the exam. Credit is awarded on the basis of a paper on a given topic.

Literature - Czech
Last update: doc. RNDr. Vojtěch Chlan, Ph.D. (13.05.2019)

E. A. Turov, M.P. Petrov, Nuclear Magnetic Resonance in Ferro- and Antiferromagnets, anglický překlad, Israel Program of Scientific Translations 1972

Requirements to the exam -
Last update: doc. RNDr. Vojtěch Chlan, Ph.D. (14.05.2019)

The exam is oral, questions are asked according to syllabus.

Credit is a prerequisite for the exam.

Syllabus -
Last update: T_KFNT (23.05.2003)
1. Introduction
Magnetism of solids. Magnetic properties of some magnetic materials. Types of magnetic ordering.

2. Physical basis of magnetism
Exchange interaction. Mean field. Indirect interaction in metals. Spin waves.

3. Hyperfine interaction
Electric and magnetic moments of nuclei. Electric and magnetic interaction of nuclei and electrons. Hyperfine interactions in free ions, in metals. Experimental data. Transferred hyperfine fields.

4. NMR
Elementary description. Nuclei used in NMR of magnetics. Pulsed techniques. NMR spectra and relaxations. Inhomogeneous broadening. Correspondence of spectra and crystal, resp. magnetic structure. Temperature dependences. Quadrupolar effects. Effect of diffusion.

5. Experimental techniques
FT NMR. Broad band spectrometers. Enhancement in domains and walls.

6. Selected results of NMR in magnetics.

 
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