Syllabus
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1. Introduction Properties of magnetics, crystal and magnetic structure. Nuclear electric and magnetic moments, interactions in external fields. Magnetic interaction of nuclei and electrons, hyperfine magnetic fields. Quadrupolar interaction. *
2. Nuclear magnetic resonance (NMR) Pulse techniques. Enhancement of radiofrequency field, excitation of signal NMR in domains and walls. Local magnetic field at nuclei, resonant frequency and its temperature dependence. Resolution, study of defects. Relaxation. Quadrupolar effects - splitting and broadening of NMR lines. *
3. Moessbauer spectroscopy Nuclear transitions-absorption and emission of gamma quanta. Moessbauer effect. Basics of Moessbauer spectroscopy. determination of hyperfine magnetic field, quadrupolar splitting, isomer shift from Moessbauer spectra. *
4. Nuclear orientation (NO) and its realisation. Emission of gamma quanta of oriented radioactive nuclei. Methods of perturbated angular distribution (PAD) and correlation (PAC). Nuclear magnetic resonance of oriented nuclei (NMR ON). Basics of experimental techniques. Applications (hyperfine field, relaxation). *
5. Muon spin rotation and relaxation Properties of muons, interactions in solids. Precession of spin in a magnetic field. Experimental arrangement. Application to studies of weak magnetic moments. *
6. Neutron diffraction Neutron scattering on nuclei and electron moments. Experimental equipment. Application - determination of magnetic structure.
Annotation
Nuclear methods used for determination of crystal, magnetic and electron structure of magnetic materials. NMR, NQR, Moessbauer spectroscopy, NO, PAC, muon spin rotation, nuclear magnetic resonance, Moessbauer spectroscopy, nuclear orientation, perturbed angular distribution and correlation, muon spin rotation.