480-6015/01 – Magnetism in Solids (MPL)
| Gurantor department | Department of Physics | Credits | 10 |
| Subject guarantor | prof. Dr. RNDr. Jiří Luňáček | Subject version guarantor | prof. Dr. RNDr. Jiří Luňáček |
| Study level | postgraduate | Requirement | Choice-compulsory type B |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2018/2019 | Year of cancellation | |
| Intended for the faculties | USP, HGF, FEI | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
The lecture deals with the phenomenological description and the basics of quantum description of magnetism in solids. In the introduction it gives an overview of the origin of magnetism and the basic magnetic arrangement in the materials. It also deals with the description of interactions in magnetic materials, magnetic domains and magnetic hysteresis. The last part deals with the introduction to nanomaterials magnetism.
Teaching methods
Lectures
Individual consultations
Summary
The course extends the area studied in the course Physics and Chemistry of Solids and extends it to the field of magnetic materials, which are important in practice.
Compulsory literature:
J.M.D. Coey, Magnetism and Magnetic Materials, Cambridge University Press (2010).
K. M. Krishnan, Fundamentals and Applications of Magnetic materials, Oxford Univ. Press (2016)
A. P. Guimaraes, Principles of Nanomagnesism, Springer, 2nd edition, 2017
Recommended literature:
P. Mohn, Magnetism in the Solid State, Springer (2006).
J. Stohr, H.C. Siegmann, Magnetism: from Fundamentals to Nanoscale Dynamics, Springer (2006).
Way of continuous check of knowledge in the course of semester
Assignment and elaboration of research on a given topic, close to the dissertation.
E-learning
None
Other requirements
Individual study of English written literature.
Prerequisities
Co-requisities
Subject has no co-requisities.
Subject syllabus:
annotation:
The subject deals with the basic magnetic arrangement in solids. In the second part, it solves interactions in magnetic materials, the formation of a domain arrangement and the problem of hysteresis. The last part is an introduction to nanomaterials magnetism.
1) ORIGIN OF THE MAGNETISM IN MATERIALS – GENERAL DESCRIPTION
Magnetic moment – origin
2) BASIC MAGNETIC ARRANGEMENT – OVERVIEW
Diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism
3) BASIC MAGNETIC ARRANGEMENT – DESCRIPTION
Classical resp. semi-quantum theory of diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism
4) INTERACTIONS IN MAGNETIC MATERIALS
Origin, exchange interactions, magnetostatic energy, magnetic anisotropy, magnetoelastic energy and magnetostriction
5) MAGNETIC DOMAINS
Single and multidimensional particles, domain walls, critical parameters, wall movement
6) MAGNETIC HYSTERESIS
Hysteresis loop, parameters, influences
7) MAGNETISM OF NANOMATERIALS
Single-domain particles, Stoner-Wohlfarth model, superparamagnetism, spin bending, interparticle interactions, collective magnetic excitations, surface effects of magnetic nanoparticle, thin films and multilayers
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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