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2020　Advanced Course of Dielectric and Ferroelectric Materials

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Academic unit or major
Graduate major in Materials Science and Engineering
Instructor(s)
Tsurumi Takaaki  Hoshina Takuya  Kobayashi Takeshi  Kurimura Sunao 
Class Format
Lecture    (ZOOM)
Media-enhanced courses
Day/Period(Room No.)
Mon5-6(Zoom)  Thr5-6(Zoom)  
Group
-
Course number
MAT.C401
Credits
2
Academic year
2020
Offered quarter
4Q
Syllabus updated
2020/9/18
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

There are currently many devices using dielectricity that have been put into practice, and dielectricity has become an important area of material science. Polarization controls dielectricity. Students in this course will first gain a classical understanding of the concept of polarization through explanations from the perspective of the electromagnetism of dielectricity, followed by the instructor using classical physics and quantum theory to explain the inducement mechanisms of polarization. The polarization of a material varies with its frequency. This phenomenon is called dielectric dispersion, and is important for understanding dielectrics from a material science perspective, and applying dielectrics. The first half of this course deals with paraelectrics which are polarized by an electric field, but the latter half covers theories and applications of piezoelectric materials which are polarized by stress, pyroelectrics which hold spontaneous polarization without an external signal, as well as ferroelectrics, for which the orientation of spontaneous polarization changes with the electric field.

Student learning outcomes

The purpose of this lecture is to understand the meaning of physical quantities to describe dielectric property of substances as well as the concept of polarization based on the material science. Furthermore, this lecture aims to recall electromagnetic theory, thermodynamics, quantum physics etc., through the learning of dielectricity.

Keywords

Polarization, Dielectricity, Ferroelectricity, Piezoelectricity

Competencies that will be developed

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

Class flow

1) Towards the end of class, students are given exercise problems related to what is taught on that day to solve.
2) Attendance is taken in every class.

Course schedule/Required learning

  Course schedule Required learning
Class 1 The concept of electric field, electric displacement and potential Understanding concepts of electric field, electric displacement and potential
Class 2 Thermodynamic description of dielectric responses of materials Understanding thermodynamic theory to describe dielecric response of materials
Class 3 Maxwell's equations Understanding Maxwell's equations and their meaning
Class 4 Classical theory of polarization Understanding polarization mechanisms based on classical theory
Class 5 Quantum theory of polarization Understanding polarization mechanisms based on quantum theory
Class 6 Debye type dielectric relaxation Understanding Debye type dielectric relaxation
Class 7 Resonance type dielectric relaxation Understanding resonance type dielectric relaxation
Class 8 Spontaneous polarization and ferroelectrics Understanding concepts of spontaneous polarization and ferroelectricity
Class 9 Point group and tensor Understanding point group and tensor
Class 10 Fundamental of piezoelectricity Understanding concept of piezoelectricity
Class 11 Material processing for ferroelectric and piezoelectric materials Understanding material processing for ferroelectric and piezoelectric materials
Class 12 Characterization technique of piezoelectricity Understanding characterization techniques of piezoelectricity
Class 13 Application of ferroelectric and piezoelectric materials I Understanding characteristics of ferroelectric and piezoelectric devices
Class 14 Application of ferroelectric and piezoelectric materials II Understanding characteristics of ferroelectric and piezoelectric devices

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

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.

Textbook(s)

None required.

Reference books, course materials, etc.

Course materials are provided during class.

Assessment criteria and methods

1) Students will be assessed on their understanding of "theory of polarization", "dielectric relaxation", "ferroelectricity", "piezoelectric materials and their application".
2) Students' course scores are based on midterm and final exams (80%) and exercise problem in every class(20%).

Related courses

  • MAT.C306 ： Dielectric Materials Science

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

No prerequisites.

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