Study of the ferroelectricity in Bi2Ti2O7 by infrared spectroscopic ellipsometry

Yun Hou; Zhiming Huang; Jianqiang Xue; Yunian Wu; Xuemin Shen; Junhao Chu

doi:10.1063/1.1875755

Study of the ferroelectricity in Bi₂Ti₂O₇ by infrared spectroscopic ellipsometry

Yun Hou^*
, Zhiming Huang
, Jianqiang Xue
, Yunian Wu
, Xuemin Shen
, Junhao Chu

^*Corresponding author for this work

CAS - Shanghai Institute of Technical Physics

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

11 Scopus citations

Abstract

Using infrared spectroscopic ellipsometry, the dielectric functions of (111) oriented Bi₂Ti₂O₇ thin films with pyrochlore structure prepared on Pt/Ti/SiO₂/Si substrate were determined in the temperature range of 20-70 °C. It is demonstrated that there is a phase transition that appears near 40 °C in terms of static effective charge as a function of temperature calculated from the infrared spectroscopic ellipsometric data of Bi₂Ti₂O₇ thin films. It suggests that the static effective charge is related to the structural distortion, which can facilitate the polarization of Bi ₂Ti₂O₇. Accordingly, ferroelectricity in Bi₂Ti₂O₇ is proved by analyzing the infrared dielectric function.

Original language	English
Article number	112905
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	11
DOIs	https://doi.org/10.1063/1.1875755
State	Published - 14 Mar 2005
Externally published	Yes

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title = "Study of the ferroelectricity in Bi2Ti2O7 by infrared spectroscopic ellipsometry",

abstract = "Using infrared spectroscopic ellipsometry, the dielectric functions of (111) oriented Bi2Ti2O7 thin films with pyrochlore structure prepared on Pt/Ti/SiO2/Si substrate were determined in the temperature range of 20-70 °C. It is demonstrated that there is a phase transition that appears near 40 °C in terms of static effective charge as a function of temperature calculated from the infrared spectroscopic ellipsometric data of Bi2Ti2O7 thin films. It suggests that the static effective charge is related to the structural distortion, which can facilitate the polarization of Bi 2Ti2O7. Accordingly, ferroelectricity in Bi2Ti2O7 is proved by analyzing the infrared dielectric function.",

author = "Yun Hou and Zhiming Huang and Jianqiang Xue and Yunian Wu and Xuemin Shen and Junhao Chu",

year = "2005",

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doi = "10.1063/1.1875755",

language = "英语",

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journal = "Applied Physics Letters",

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TY - JOUR

T1 - Study of the ferroelectricity in Bi2Ti2O7 by infrared spectroscopic ellipsometry

AU - Hou, Yun

AU - Huang, Zhiming

AU - Xue, Jianqiang

AU - Wu, Yunian

AU - Shen, Xuemin

AU - Chu, Junhao

PY - 2005/3/14

Y1 - 2005/3/14

N2 - Using infrared spectroscopic ellipsometry, the dielectric functions of (111) oriented Bi2Ti2O7 thin films with pyrochlore structure prepared on Pt/Ti/SiO2/Si substrate were determined in the temperature range of 20-70 °C. It is demonstrated that there is a phase transition that appears near 40 °C in terms of static effective charge as a function of temperature calculated from the infrared spectroscopic ellipsometric data of Bi2Ti2O7 thin films. It suggests that the static effective charge is related to the structural distortion, which can facilitate the polarization of Bi 2Ti2O7. Accordingly, ferroelectricity in Bi2Ti2O7 is proved by analyzing the infrared dielectric function.

AB - Using infrared spectroscopic ellipsometry, the dielectric functions of (111) oriented Bi2Ti2O7 thin films with pyrochlore structure prepared on Pt/Ti/SiO2/Si substrate were determined in the temperature range of 20-70 °C. It is demonstrated that there is a phase transition that appears near 40 °C in terms of static effective charge as a function of temperature calculated from the infrared spectroscopic ellipsometric data of Bi2Ti2O7 thin films. It suggests that the static effective charge is related to the structural distortion, which can facilitate the polarization of Bi 2Ti2O7. Accordingly, ferroelectricity in Bi2Ti2O7 is proved by analyzing the infrared dielectric function.

UR - https://www.scopus.com/pages/publications/17944380649

U2 - 10.1063/1.1875755

DO - 10.1063/1.1875755

M3 - 文章

AN - SCOPUS:17944380649

SN - 0003-6951

VL - 86

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 112905

ER -

Study of the ferroelectricity in Bi₂Ti₂O₇ by infrared spectroscopic ellipsometry

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