Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na0.5Bi0.5)1- xCex(Ti0.99Fe0.01)O3 films

S. Zhang; J. Z. Zhang; M. J. Han; Y. W. Li; Z. G. Hu; J. H. Chu

doi:10.1063/1.4863417

Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na_0.5Bi_0.5)_1- _xCe_x(Ti_0.99Fe_0.01)O₃ films

S. Zhang
, J. Z. Zhang
, M. J. Han
, Y. W. Li
, Z. G. Hu^*
, J. H. Chu

^*Corresponding author for this work

School of Physics and Electronic Science

East China Normal University

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

10 Scopus citations

Abstract

Optical properties and phase transition of Ce-modified (Na _0.5Bi_0.5)(Ti_0.99Fe_0.01)O ₃ nanocrystalline films have been investigated by spectroscopic ellipsometry from -70 to 500 C. Temperature dependent dielectric functions in the photon energy range of 0.6-6.4 eV can be derived by the Tauc-Lorentz model. It was found that the features in dielectric function (ε) showed an abrupt variation near 200 and 340 C, respectively. The phenomena can be explained by the appearance and/or reversal of polarization. It indicates that ferroelectric (rhombohedral) to paraelectric (tetragonal) phase transition is related to electronic band variation, which is observed by this technique.

Original language	English
Article number	041106
Journal	Applied Physics Letters
Volume	104
Issue number	4
DOIs	https://doi.org/10.1063/1.4863417
State	Published - 27 Jan 2014

Access to Document

10.1063/1.4863417

Cite this

@article{2c58c2a2b59a40b28618abc2da27281a,

title = "Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na0.5Bi0.5)1- xCex(Ti0.99Fe0.01)O3 films",

abstract = "Optical properties and phase transition of Ce-modified (Na 0.5Bi0.5)(Ti0.99Fe0.01)O 3 nanocrystalline films have been investigated by spectroscopic ellipsometry from -70 to 500 C. Temperature dependent dielectric functions in the photon energy range of 0.6-6.4 eV can be derived by the Tauc-Lorentz model. It was found that the features in dielectric function (ε) showed an abrupt variation near 200 and 340 C, respectively. The phenomena can be explained by the appearance and/or reversal of polarization. It indicates that ferroelectric (rhombohedral) to paraelectric (tetragonal) phase transition is related to electronic band variation, which is observed by this technique.",

author = "S. Zhang and Zhang, \{J. Z.\} and Han, \{M. J.\} and Li, \{Y. W.\} and Hu, \{Z. G.\} and Chu, \{J. H.\}",

year = "2014",

month = jan,

day = "27",

doi = "10.1063/1.4863417",

language = "英语",

volume = "104",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "4",

}

TY - JOUR

T1 - Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na0.5Bi0.5)1- xCex(Ti0.99Fe0.01)O3 films

AU - Zhang, S.

AU - Zhang, J. Z.

AU - Han, M. J.

AU - Li, Y. W.

AU - Hu, Z. G.

AU - Chu, J. H.

PY - 2014/1/27

Y1 - 2014/1/27

N2 - Optical properties and phase transition of Ce-modified (Na 0.5Bi0.5)(Ti0.99Fe0.01)O 3 nanocrystalline films have been investigated by spectroscopic ellipsometry from -70 to 500 C. Temperature dependent dielectric functions in the photon energy range of 0.6-6.4 eV can be derived by the Tauc-Lorentz model. It was found that the features in dielectric function (ε) showed an abrupt variation near 200 and 340 C, respectively. The phenomena can be explained by the appearance and/or reversal of polarization. It indicates that ferroelectric (rhombohedral) to paraelectric (tetragonal) phase transition is related to electronic band variation, which is observed by this technique.

AB - Optical properties and phase transition of Ce-modified (Na 0.5Bi0.5)(Ti0.99Fe0.01)O 3 nanocrystalline films have been investigated by spectroscopic ellipsometry from -70 to 500 C. Temperature dependent dielectric functions in the photon energy range of 0.6-6.4 eV can be derived by the Tauc-Lorentz model. It was found that the features in dielectric function (ε) showed an abrupt variation near 200 and 340 C, respectively. The phenomena can be explained by the appearance and/or reversal of polarization. It indicates that ferroelectric (rhombohedral) to paraelectric (tetragonal) phase transition is related to electronic band variation, which is observed by this technique.

UR - https://www.scopus.com/pages/publications/84893283858

U2 - 10.1063/1.4863417

DO - 10.1063/1.4863417

M3 - 文章

AN - SCOPUS:84893283858

SN - 0003-6951

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 041106

ER -

Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na_0.5Bi_0.5)_1- _xCe_x(Ti_0.99Fe_0.01)O₃ films

Abstract

Access to Document

Other files and links

Fingerprint

Cite this