Ferroelectricity of weak-polar organic molecules in alternate Langmuir-Blodgett multilayer films

Shuhong Li; Shihong Ma; Bo Li; Jinglan Sun; Genshui Wang; Xiangjian Meng; Junhao Chu; Wencheng Wang

doi:10.1360/02wb0210

Ferroelectricity of weak-polar organic molecules in alternate Langmuir-Blodgett multilayer films

Shuhong Li, Shihong Ma, Bo Li, Jinglan Sun, Genshui Wang, Xiangjian Meng, Junhao Chu, Wencheng Wang

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Ferroelectricity in Langmuir-Blodgett (LB) films (Z-type and alternated Y-type) of nitrogencrown (NC) and arachidic acid (AA) was investigated by electric polarization measurements and surface pressure-molecular area (π-A) isotherm. For Z-type AA LB multilayer and the AA LB films incorporating barium and manganese ions, as well as for Z-type NC LB multilayer and the Y-type NC/AA alternating LB films, typical hysteresis loops of the samples were observed and confirmed existence of the remnant polarizations in the LB films. Their corresponding remnant polarizations were found to be 15, 180, 650, 450 and 9400 μC · m^-2, respectively. Therefore, it was demonstrated that the enhancement of ferroelectricity in the LB films could be created by incorporation of barium and manganese ions into the LB film structures and strong interaction between alternating monolayers of the samples. These novel approaches can be employed to create strong ferroelectric LB films to make ferroelectric thin-film device for practical applications.

Original language	English
Pages (from-to)	2176-2179
Number of pages	4
Journal	Chinese Science Bulletin
Volume	48
Issue number	20
DOIs	https://doi.org/10.1360/02wb0210
State	Published - 2003
Externally published	Yes

Keywords

Alternate LB films
Ferroelectricity
Hysteresis loop

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@article{774953315aa04f8299bf7058db57dff2,

title = "Ferroelectricity of weak-polar organic molecules in alternate Langmuir-Blodgett multilayer films",

abstract = "Ferroelectricity in Langmuir-Blodgett (LB) films (Z-type and alternated Y-type) of nitrogencrown (NC) and arachidic acid (AA) was investigated by electric polarization measurements and surface pressure-molecular area (π-A) isotherm. For Z-type AA LB multilayer and the AA LB films incorporating barium and manganese ions, as well as for Z-type NC LB multilayer and the Y-type NC/AA alternating LB films, typical hysteresis loops of the samples were observed and confirmed existence of the remnant polarizations in the LB films. Their corresponding remnant polarizations were found to be 15, 180, 650, 450 and 9400 μC · m-2, respectively. Therefore, it was demonstrated that the enhancement of ferroelectricity in the LB films could be created by incorporation of barium and manganese ions into the LB film structures and strong interaction between alternating monolayers of the samples. These novel approaches can be employed to create strong ferroelectric LB films to make ferroelectric thin-film device for practical applications.",

keywords = "Alternate LB films, Ferroelectricity, Hysteresis loop",

author = "Shuhong Li and Shihong Ma and Bo Li and Jinglan Sun and Genshui Wang and Xiangjian Meng and Junhao Chu and Wencheng Wang",

year = "2003",

doi = "10.1360/02wb0210",

language = "英语",

volume = "48",

pages = "2176--2179",

journal = "Chinese Science Bulletin",

issn = "1001-6538",

publisher = "Elsevier B.V.",

number = "20",

}

TY - JOUR

T1 - Ferroelectricity of weak-polar organic molecules in alternate Langmuir-Blodgett multilayer films

AU - Li, Shuhong

AU - Ma, Shihong

AU - Li, Bo

AU - Sun, Jinglan

AU - Wang, Genshui

AU - Meng, Xiangjian

AU - Chu, Junhao

AU - Wang, Wencheng

PY - 2003

Y1 - 2003

N2 - Ferroelectricity in Langmuir-Blodgett (LB) films (Z-type and alternated Y-type) of nitrogencrown (NC) and arachidic acid (AA) was investigated by electric polarization measurements and surface pressure-molecular area (π-A) isotherm. For Z-type AA LB multilayer and the AA LB films incorporating barium and manganese ions, as well as for Z-type NC LB multilayer and the Y-type NC/AA alternating LB films, typical hysteresis loops of the samples were observed and confirmed existence of the remnant polarizations in the LB films. Their corresponding remnant polarizations were found to be 15, 180, 650, 450 and 9400 μC · m-2, respectively. Therefore, it was demonstrated that the enhancement of ferroelectricity in the LB films could be created by incorporation of barium and manganese ions into the LB film structures and strong interaction between alternating monolayers of the samples. These novel approaches can be employed to create strong ferroelectric LB films to make ferroelectric thin-film device for practical applications.

AB - Ferroelectricity in Langmuir-Blodgett (LB) films (Z-type and alternated Y-type) of nitrogencrown (NC) and arachidic acid (AA) was investigated by electric polarization measurements and surface pressure-molecular area (π-A) isotherm. For Z-type AA LB multilayer and the AA LB films incorporating barium and manganese ions, as well as for Z-type NC LB multilayer and the Y-type NC/AA alternating LB films, typical hysteresis loops of the samples were observed and confirmed existence of the remnant polarizations in the LB films. Their corresponding remnant polarizations were found to be 15, 180, 650, 450 and 9400 μC · m-2, respectively. Therefore, it was demonstrated that the enhancement of ferroelectricity in the LB films could be created by incorporation of barium and manganese ions into the LB film structures and strong interaction between alternating monolayers of the samples. These novel approaches can be employed to create strong ferroelectric LB films to make ferroelectric thin-film device for practical applications.

KW - Alternate LB films

KW - Ferroelectricity

KW - Hysteresis loop

UR - https://www.scopus.com/pages/publications/33744945207

U2 - 10.1360/02wb0210

DO - 10.1360/02wb0210

M3 - 文章

AN - SCOPUS:33744945207

SN - 1001-6538

VL - 48

SP - 2176

EP - 2179

JO - Chinese Science Bulletin

JF - Chinese Science Bulletin

IS - 20

ER -

Ferroelectricity of weak-polar organic molecules in alternate Langmuir-Blodgett multilayer films

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Keywords

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