Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer

Takashi Nakajima; Yoshiyuki Takahashi; Takeo Furukawa

Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer

Takashi Nakajima, Yoshiyuki Takahashi, Takeo Furukawa

Institute for Materials Research (IMR)

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

Abstract

The time domain measurements of ferroelectric polarization reversal were performed for spin-coated 42-nnvthick vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. The observed fastest switching time down to -100°C is 100ns which is shorter than the dielectric relaxation time associated with crystalline dipole motions. For this fast polarization reversal, it seems as though the nuclei of polarization are generated independently to the thermal fluctuations of dipoles. However, the activation fields of this film depend on its permittivity at 10MHz. This result indicates that the faster components of dipole fluctuations cause nucleation because the dielectric relaxation times are broadly distributed.

Original language	English
Pages	3849-3850
Number of pages	2
Publication status	Published - 2006 Dec 1
Event	55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan Duration: 2006 Sep 20 → 2006 Sep 22

Other

Other	55th Society of Polymer Science Japan Symposium on Macromolecules
Country/Territory	Japan
City	Toyama
Period	06/9/20 → 06/9/22

Keywords

Ferroelectric polymer
Polarization reversal
Temperature dependence
Thin film
Vinylidene fluoride

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer",

abstract = "The time domain measurements of ferroelectric polarization reversal were performed for spin-coated 42-nnvthick vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. The observed fastest switching time down to -100°C is 100ns which is shorter than the dielectric relaxation time associated with crystalline dipole motions. For this fast polarization reversal, it seems as though the nuclei of polarization are generated independently to the thermal fluctuations of dipoles. However, the activation fields of this film depend on its permittivity at 10MHz. This result indicates that the faster components of dipole fluctuations cause nucleation because the dielectric relaxation times are broadly distributed.",

keywords = "Ferroelectric polymer, Polarization reversal, Temperature dependence, Thin film, Vinylidene fluoride",

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

year = "2006",

month = dec,

day = "1",

language = "English",

pages = "3849--3850",

note = "55th Society of Polymer Science Japan Symposium on Macromolecules ; Conference date: 20-09-2006 Through 22-09-2006",

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TY - CONF

T1 - Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer

AU - Nakajima, Takashi

AU - Takahashi, Yoshiyuki

AU - Furukawa, Takeo

PY - 2006/12/1

Y1 - 2006/12/1

N2 - The time domain measurements of ferroelectric polarization reversal were performed for spin-coated 42-nnvthick vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. The observed fastest switching time down to -100°C is 100ns which is shorter than the dielectric relaxation time associated with crystalline dipole motions. For this fast polarization reversal, it seems as though the nuclei of polarization are generated independently to the thermal fluctuations of dipoles. However, the activation fields of this film depend on its permittivity at 10MHz. This result indicates that the faster components of dipole fluctuations cause nucleation because the dielectric relaxation times are broadly distributed.

AB - The time domain measurements of ferroelectric polarization reversal were performed for spin-coated 42-nnvthick vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. The observed fastest switching time down to -100°C is 100ns which is shorter than the dielectric relaxation time associated with crystalline dipole motions. For this fast polarization reversal, it seems as though the nuclei of polarization are generated independently to the thermal fluctuations of dipoles. However, the activation fields of this film depend on its permittivity at 10MHz. This result indicates that the faster components of dipole fluctuations cause nucleation because the dielectric relaxation times are broadly distributed.

KW - Ferroelectric polymer

KW - Polarization reversal

KW - Temperature dependence

KW - Thin film

KW - Vinylidene fluoride

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M3 - Paper

AN - SCOPUS:33846132593

SP - 3849

EP - 3850

T2 - 55th Society of Polymer Science Japan Symposium on Macromolecules

Y2 - 20 September 2006 through 22 September 2006

ER -

Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer

Abstract

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Keywords

ASJC Scopus subject areas

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