The effect of thickness distribution on the ferroelectric characteristics of VDF/TrFE thin film

Ryosuke Abe; Takashi Nakajima; Yoshiyuki Takahashi; Takeo Furukawa

The effect of thickness distribution on the ferroelectric characteristics of VDF/TrFE thin film

Ryosuke Abe, Takashi Nakajima, Yoshiyuki Takahashi, Takeo Furukawa

Institute for Materials Research (IMR)

Research output: Contribution to conference › Paper › peer-review

Abstract

Ferroelectric polymer, vinylidene fluoride(75%)with trifluoride(25%), makes nanoscopic structure in surface. Because of such structure, VDF/TrFE thin films have the distribution of thickness. The permittivity characteristics change as the film thickness is reduced. Therefore, it is important to study thickness and roughness in surface. Surface roughness of VDF/TrFE thin films was observed by using atomic force microscopy (AFM). In this report, we will discuss the effect of surface roughness on the permittivitiy and the ferroelectric switching characteristics. Using the harmonic mean thickness of thin film measured by AFM, we measured permittivity About the VDF/TrFE thin film on gold, decrease of permittivity was not shown as compared to the film on alminium. The derivative switching time have the distribution as the distribution of thickness. Ferroelectric switching curve obtained from the distribution accord with the experimental value.

Original language	English
Number of pages	1
Publication status	Published - 2005 Dec 1
Event	54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: 2005 Sep 20 → 2005 Sep 22

Other

Other	54th SPSJ Symposium on Macromolecules
Country	Japan
City	Yamagata
Period	05/9/20 → 05/9/22

Keywords

AFM
Ferroelectric polymer
Permittivity
Surface roughness
Switching characteristics
VDF/TrFE

ASJC Scopus subject areas

Engineering(all)

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title = "The effect of thickness distribution on the ferroelectric characteristics of VDF/TrFE thin film",

abstract = "Ferroelectric polymer, vinylidene fluoride(75%)with trifluoride(25%), makes nanoscopic structure in surface. Because of such structure, VDF/TrFE thin films have the distribution of thickness. The permittivity characteristics change as the film thickness is reduced. Therefore, it is important to study thickness and roughness in surface. Surface roughness of VDF/TrFE thin films was observed by using atomic force microscopy (AFM). In this report, we will discuss the effect of surface roughness on the permittivitiy and the ferroelectric switching characteristics. Using the harmonic mean thickness of thin film measured by AFM, we measured permittivity About the VDF/TrFE thin film on gold, decrease of permittivity was not shown as compared to the film on alminium. The derivative switching time have the distribution as the distribution of thickness. Ferroelectric switching curve obtained from the distribution accord with the experimental value.",

keywords = "AFM, Ferroelectric polymer, Permittivity, Surface roughness, Switching characteristics, VDF/TrFE",

author = "Ryosuke Abe and Takashi Nakajima and Yoshiyuki Takahashi and Takeo Furukawa",

year = "2005",

month = dec,

day = "1",

language = "English",

note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

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TY - CONF

T1 - The effect of thickness distribution on the ferroelectric characteristics of VDF/TrFE thin film

AU - Abe, Ryosuke

AU - Nakajima, Takashi

AU - Takahashi, Yoshiyuki

AU - Furukawa, Takeo

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Ferroelectric polymer, vinylidene fluoride(75%)with trifluoride(25%), makes nanoscopic structure in surface. Because of such structure, VDF/TrFE thin films have the distribution of thickness. The permittivity characteristics change as the film thickness is reduced. Therefore, it is important to study thickness and roughness in surface. Surface roughness of VDF/TrFE thin films was observed by using atomic force microscopy (AFM). In this report, we will discuss the effect of surface roughness on the permittivitiy and the ferroelectric switching characteristics. Using the harmonic mean thickness of thin film measured by AFM, we measured permittivity About the VDF/TrFE thin film on gold, decrease of permittivity was not shown as compared to the film on alminium. The derivative switching time have the distribution as the distribution of thickness. Ferroelectric switching curve obtained from the distribution accord with the experimental value.

AB - Ferroelectric polymer, vinylidene fluoride(75%)with trifluoride(25%), makes nanoscopic structure in surface. Because of such structure, VDF/TrFE thin films have the distribution of thickness. The permittivity characteristics change as the film thickness is reduced. Therefore, it is important to study thickness and roughness in surface. Surface roughness of VDF/TrFE thin films was observed by using atomic force microscopy (AFM). In this report, we will discuss the effect of surface roughness on the permittivitiy and the ferroelectric switching characteristics. Using the harmonic mean thickness of thin film measured by AFM, we measured permittivity About the VDF/TrFE thin film on gold, decrease of permittivity was not shown as compared to the film on alminium. The derivative switching time have the distribution as the distribution of thickness. Ferroelectric switching curve obtained from the distribution accord with the experimental value.

KW - AFM

KW - Ferroelectric polymer

KW - Permittivity

KW - Surface roughness

KW - Switching characteristics

KW - VDF/TrFE

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T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

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