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2024　Solid State Properties II (Dielectric and Magnetic Materials

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Academic unit or major
Undergraduate major in Materials Science and Engineering
Instructor(s)
Hoshina Takuya  Matsushita Nobuhiro 
Class Format
Lecture     
Media-enhanced courses
Day/Period(Room No.)
-
Group
-
Course number
MAT.C307
Credits
2
Academic year
2024
Offered quarter
3Q
Syllabus updated
2024/3/14
Lecture notes updated
-
Language used
Japanese
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Course description and aims

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.

Student learning outcomes

The purpose of this course is to understand the fundamentals and applications of dielectric and magnetic materials.

Keywords

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

Competencies that will be developed

✔ Specialist skills ✔ Intercultural skills Communication skills Critical thinking skills ✔ Practical and/or problem-solving skills

Class flow

To get a good understanding of the course contents, exercise problems are provided.

Course schedule/Required learning

  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)

Out-of-Class Study Time (Preparation and Review)

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.

Textbook(s)

Unspecified.

Reference books, course materials, etc.

C.Kittel, Introduction to solid state physics, Wiley.
Keizo Ohta. Fundamentals of Magnetics. Kyoritsu-shuppan.
Soshin Chikazumi. Physics of Ferromagnetism. Oxford University Press.

Assessment criteria and methods

1) Grades will be based on final exam.
2) Students may be assessed on their understanding of the class contents.

Related courses

  • MAT.A203 ： Quantum Mechanics of Materials
  • MAT.C202 ： Crystal and Phonon
  • MAT.C203 ： Statistical Mechanics (Ceramics course)
  • MAT.C302 ： Spectroscopy

Prerequisites (i.e., required knowledge, skills, courses, etc.)

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.

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