In the first half of the course, students will understand the dielectric properties of materials and learn how dielectric materials are utilized in electronic devices. Starting with the concept and definition of basic variables to describe dielectricity macroscopically, the lecture will explain the microscopic mechanism of dielectric polarization, which is the most important variable to understand dielectricity. The material science and applications related to piezoelectric, pyroelectric, and ferroelectric materials will then be introduced.
In the second half of the course, students will understand the origin of magnetism in materials and learn how magnetic materials are utilized in electronic devices. Students will understand the origin of magnetic moments from the basics of electromagnetism and quantum mechanics, and learn how to describe the magnetic interactions between magnetic moments and the behaviors of magnetic moments in a crystal. Topics also include magnetic anisotropy, magnetization processes, magnetic domain structures, and magnetic resonance, providing a basis for applying magnetic materials to electronic devices.
The purpose of this course is to understand the fundamentals and applications of dielectric and magnetic materials.
dielectrics, polarization, dielectric dispersion, complex dielectric constant, ferroelectricity, piezoelectricity,
magnetic material, angular momentum, Curie-Weiss law, magnetic anisotropy, magnetization process, magnetic domain structure, magnetic resonance
✔ Specialist skills | ✔ Intercultural skills | Communication skills | Critical thinking skills | ✔ Practical and/or problem-solving skills |
To get a good understanding of the course contents, exercise problems are provided.
Course schedule | Required learning | |
---|---|---|
Class 1 | Macroscopic description of dielectric properties, dielectric properties under AC electric field | Understanding the basic variables for macroscopic description of dielectric properties, and dielectric properties under AC electric field |
Class 2 | Microscopic origin of dielectric polarization | Understanding the microscopic origin of dielectric polarization |
Class 3 | Ionic polarization | Understanding of ionic polarization |
Class 4 | Orientational polarization | Understanding of orientational polarization |
Class 5 | Crystal symmetry and physical properties (piezoelectricity and pyroelectricity) | Understanding piezoelectricity and pyroelectricity from crystal symmetry |
Class 6 | Ferroelectricity | Understanding of ferroelectricity |
Class 7 | Dielectric polarization mechanism of barium titanate, design of dielectric materials | Learn about the dielectric polarization mechanism of barium titanate and the design of dielectric materials |
Class 8 | Paramagnetism and Band theory | Derivation of paramagnetic susceptibility |
Class 9 | Molecular magnetic field theory of ferromagnetic material | Expressions of molecular magnetic field theory of ferromagnetic material and understanding of CurieーWeiss's low |
Class 10 | Molecular magnetic field theory of antiferromagnetic and ferrimagnetic material and diamagnetism | Expressions of molecular magnetic field theory of antiferromagnetic and ferrimagnetic material and understanding of diamagnetism |
Class 11 | Magnetic anisotropy | Derivation of expression of uniaxial magnetic anisotropy in a polar coordinate system |
Class 12 | Magnetic domain structure and magnetic wall | Derivation of Magnetic domain wall width and a domain wall energy |
Class 13 | Magnetization process and magnetic loss | Understanding of Rotational magnetization and Analyses of magnetic losses |
Class 14 | Magnetic resonance, applications of magnetic material | Magnetization dynamics, Electron spin resonance, Ferro magnetic resonance, Magnetic device applications(GMR, Tunneling magnetic resistance) |
To enhance effective learning, students are encouraged to spend approximately 30 minutes preparing for class and another 30 minutes reviewing class content afterwards (including assignments) for each class.
Unspecified.
C.Kittel, Introduction to solid state physics, Wiley.
Keizo Ohta. Fundamentals of Magnetics. Kyoritsu-shuppan.
Soshin Chikazumi. Physics of Ferromagnetism. Oxford University Press.
1) Grades will be based on final exam.
2) Students may be assessed on their understanding of the class contents.
Students must have successfully completed a class of "Solid State Properties I (Introduction and Semiconductor) ", "Fundamentals of Electromagnetism" and ”Crystal and Phonon” or have equivalent knowledge.