Magnetic properties of materials from nano to macro
Learning outcomes of the course unit
At the end of the course, the student is expected to be able to:
[Knowledge and understanding]
- know the main physical properties of magnetic functional materials;
- explain the origin of the depicted phenomena on the basis of experimental findings and of the outlined physical models;
- understand the effects of fundamental interactions on the magnetic phenomenology at the different length scales;
- classify and compare different magnetic functional materials based on their physical characteristics and their applications;
[Applying knowledge and understanding]
- recognize the main features of magnetic functional materials both at a theoretical and at an experimental level and apply the acquired knowledge to address the study of a topic in such field;
- carry out an autonomous study of a particular class of magnetic functional materials based on papers of the up-to-date literature, using the methodological approach developed during the course, which includes the synthesis techniques of the material, the characterization of its physical properties and the related applications;
- recognize and draw connections between features of different magnetic functional materials for developing an ability for autonomous judgment based on an enlarged knowledge of the various aspects of the problem under consideration;
- evaluate critically the validity limits of the developed models and the advantages / disadvantages of the different methodologies;
- interpret in its essentials and summarize the content of the most recent literature papers in the field of Physics of magnetic functional materials;
[Ability to communicate]
- communicate the product of this study in a clear, synthetic and effective manner, using the correct jargon of the Physics of Matter and Materials Science.
Suggested prerequisites: mechanics and thermodynamics, general chemistry, electromagnetism, elements of statistical mechanics and quantum mechanics.
Course contents summary
These lectures provide an overview of the basic properties of magnetically ordered solid materials and their explanation in atomic terms. In addition, the effects of fundamental interactions on the magnetic phenomenology at the different length scales will be highlighted. The students will become familiar with the main concepts, effects and definitions, which constitute the necessary basis for understanding the current topics of modern magnetism. These concepts will be adopted for explaining the magnetic and multi-functional properties of some emerging classes of magnetic materials in frontier applications in the fields of energy, biomedicine and information technology.
Some of the main covered topics are:
• Magnetic moments in free atoms and ions, diamagnetism
• Assembly of atoms, paramagnetism
• Exchange interactions and ferromagnetism
• Magnetism in metals
• Anti-ferromagnetism, ferrimagnetism and non collinear order
• Crystal field effects and magnetic anisotropy
• Magnetic domains and the magnetization process
• Magnetic materials for energy conversion applications
• Magnetic thin films and nanostructures
• Relevant lenghtscales in magnetism
• Superparamagnetism, interface and surface anisotropy
• Magnetic materials for biomedical applications
Slides of the Powerpoint presentations
- J.M.D. Coey, Magnetism and Magnetic Materials, Cambridge University Press, Cambridge 2010
- É. du Trémolet de Lacheisserie, D. Gignoux and M. Schlenker, Magnetism – Fundamentals, Springer Science 2005
- K.H.J. Buschow and F.R. De Boer, Physics of Magnetism and Magnetic Materials, Kluwer Academic Publ., New York 2003
- S. Blundell, Magnetism in Condensed Matter, Oxford University Press, Oxford 2001
- J. Crangle, Solid State Magnetism, Edward Arnold Ltd, London 1991
The teaching methodology will be based primarily on frontal lecturing, with help of audio-visual multimedia instruments. The lectures will be organized face-to-face, with the possibility of attending them even from a distance synchronously (during class hours), through the Teams platform. Students are required, at the end of the course, to prepare a brief presentation, which should be the result of independent study, regarding the physical properties of a particular class of magnetic functional materials.
The slides of the Powerpoint presentations used to support lectures will be uploaded weekly on the Elly platform. To download slides, the students need to enrol in the course on Elly. Slides are considered an integral part of teaching material.
Assessment methods and criteria
The final verification of the acquired knowledge and understanding of the covered concepts is performed by an oral exam. The oral exam consists of a presentation on the properties of a particular class of magnetic functional materials at discretion of the student. During the presentation, the student will be asked to:
- probe the ability to carry out an autonomous study of a particular class of magnetic functional materials based on papers of the up-to-date literature, using the methodological approach developed during the course;
- communicate the product of this study by a presentation in a clear, synthetic and effective manner and utilizing the correct jargon of the Physics of Matter and Materials Science.
If due to the persistence of the health emergency it is necessary to integrate the conduct of the exams with the remote modality, the presentation on the properties of a particular class of magnetic functional materials, will be carried out remotely (via Teams).
Office hours: upon appointment