Print

2021　Dielectric Materials Science

Font size  SML

Register update notification mail Add to favorite lecture list
Academic unit or major
Undergraduate major in Materials Science and Engineering
Instructor(s)
Tsurumi Takaaki  Hoshina Takuya 
Class Format
Lecture     
Media-enhanced courses
Day/Period(Room No.)
Tue5-6(H114)  Fri5-6(H114)  
Group
-
Course number
MAT.C306
Credits
2
Academic year
2021
Offered quarter
2Q
Syllabus updated
2021/3/19
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

This lecture starts from the introduction of some basic quantities used for describing dielectric property of substances such electric field, electric displacement, polarization, dipole momentum etc. The polarization is the most important concept in the physics of dielectrics. Polarization mechanisms including frequency dispersion are explained in detail. For understanding electronic polarization, the concept of local field should be explained using classical Lorenz local field theory. The Clausius-Mossotti relation is explained for understanding microscopic electronic polarization and macroscopic dielectric constant. In the latter part in the lecture, frequency dispersion of polarization mechanism is explained, and applications of piezoelectric, pyroelectric and ferroelectric materials are introduced.

Student learning outcomes

The purpose of this lecture is to understand the basic concept and applications of ceramic dielectrics by learning some important physical constants to describe dielectric phenomenon. Furthermore, this lecture tri to educate students to think the applications of dielectric materials using knowledge of polarization mechanisms based on material science.

Keywords

dielectric, polarization, dielectric dispersion, complex dielectric constant, ferroelectricity

Competencies that will be developed

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

Class flow

Lecture style is a normal classroom lecture. Printed documents are supplied as necessary.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Classification of materials in terms of electric conductivity and some basic quantities Understanding classification of materials in terms of electric conductivity and some basic quantities
Class 2 Classification of polarization: electronic, ionic, dipole and interfacial polarizations Understanding classification of polarization
Class 3 Electric field in dielectrics and external field, Lorenz field Electric field in dielectrics and external field, Lorenz field
Class 4 Electronic polarization and electronic polalizability Understanding electronic polarization and electronic polalizability
Class 5 Clausius-Mossotti relationship Understanding Clausius-Mossotti relationship
Class 6 Complex dielectric constant and equivalent circuit of dielectrics Understanding complex dielectric constant and equivalent circuit of dielectrics
Class 7 Electronic polarization and its frequency dependence Understanding electronic polarization and its frequency dependence
Class 8 Ionic polarization and its frequency dependence Understanding ionic polarization and its frequency dependence
Class 9 Lyddane-Sachs-Teller relation Understanding Lyddane-Sachs-Teller relation
Class 10 Dipole polarization and its frequency dependence Understanding dipole polarization and its frequency dependence
Class 11 Interfacial polarization and its frequency dependence Understanding interfacial polarization and its frequency dependence
Class 12 Ferroelectrics Understanding of ferroelectrics
Class 13 Dielectric polarization mechanism of barium titanate and other dielectric materials Understanding the dielectric polarization mechanism of barium titanate and other dielectric materials

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)

Not specified

Reference books, course materials, etc.

Introduction to solid state physics, C.Kittel, Wiley

Assessment criteria and methods

Grading will be decided based on reports.

Related courses

  • Not specified

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

Not specified

Contact information (e-mail and phone)    Notice : Please replace from "[at]" to "@"(half-width character).

e-mail:ttsurumi[at]ceram.titech.ac.jp, hoshina.t.aa[at]m.titech.ac.jp

Office hours

Afternoon of the lecture date

Page Top