2016 Fiscal Year Final Research Report
Ultrawideband dielectric spectra of novel ferroelectric-related materials and their crystallochemical understanding
Project/Area Number |
26420676
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Inorganic materials/Physical properties
|
Research Institution | Tokyo Institute of Technology |
Principal Investigator |
Hoshina Takuya 東京工業大学, 物質理工学院, 助教 (80509399)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Keywords | 強誘電体 / 酸窒化物 / 誘電特性 / 結晶 / テラヘルツ |
Outline of Final Research Achievements |
In order to propose a method for design of ferroelectric materials, we synthesized some novel ferroelectric-related materials as case studies and tried to crystallographically explain the dielectric and ferroelectric properties. Especially, by measuring the dielectric permittivity of a novel silicate ferroelectric compound and mixed-anion dielectrics in a wide frequency range, it was possible to comprehensively understand the dielectric properties from the viewpoint of electronic structureand lattice vibration, etc. This research presents a research process that quantitatively connects the relationship among the crystal structure, lattice vibration, and dielectric properties, and therefore the process is thought to lead to a design method for the next generation ferroelectric materials.
|
Free Research Field |
誘電体・強誘電体,テラヘルツ分光
|