Phase diagram and incommensurate antiferroelectric structure in (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 ceramics discovered by band-to-band optical transitions

X. J. Ding; L. P. Xu; Z. G. Hu; X. F. Chen; G. S. Wang; X. L. Dong; J. H. Chu

doi:10.1063/1.4897357

Phase diagram and incommensurate antiferroelectric structure in (Pb_1-1.5_xLa_x)(Zr_0.42Sn_0.40Ti_0.18)O₃ ceramics discovered by band-to-band optical transitions

X. J. Ding
, L. P. Xu
, Z. G. Hu^*
, X. F. Chen
, G. S. Wang
, X. L. Dong
, J. H. Chu

^*Corresponding author for this work

School of Physics and Electronic Science

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

10 Scopus citations

Abstract

Optical properties and phase transitions of (Pb_1-1.5_xLa_x)(Zr_0.42Sn_0.40Ti_0.18)O₃ (PLZST 100x/42/40/18) ceramics with different compositions have been investigated by temperature dependent spectroscopic ellipsometry. Two interband critical points (E c p 1 and E c p 2) located at about 3.9 and 5.1 eV can be obtained by fitting standard line shapes to the second derivatives of the complex dielectric functions. Based on the band-to-band transitions, the phase diagram of PLZST ceramics can be well presented. Moreover, a peculiar incommensurate antiferroelectric state has been found to exist above the temperature of the normal commensurate antiferroelectric tetragonal structure. It can be stable below Curie temperature, evolving slowly with decreasing temperature towards the commensurate structure, which is due to strong pinning of incommensurate domain walls. The phenomena can result from a competition between ferroelectric ordering and antiferroelectric ordering caused by the lanthanum modification.

Original language	English
Article number	131909
Journal	Applied Physics Letters
Volume	105
Issue number	13
DOIs	https://doi.org/10.1063/1.4897357
State	Published - 29 Sep 2014

Access to Document

10.1063/1.4897357

Cite this

@article{d1546973239547cbbb463c501e66fef0,

title = "Phase diagram and incommensurate antiferroelectric structure in (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 ceramics discovered by band-to-band optical transitions",

abstract = "Optical properties and phase transitions of (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 (PLZST 100x/42/40/18) ceramics with different compositions have been investigated by temperature dependent spectroscopic ellipsometry. Two interband critical points (E c p 1 and E c p 2) located at about 3.9 and 5.1 eV can be obtained by fitting standard line shapes to the second derivatives of the complex dielectric functions. Based on the band-to-band transitions, the phase diagram of PLZST ceramics can be well presented. Moreover, a peculiar incommensurate antiferroelectric state has been found to exist above the temperature of the normal commensurate antiferroelectric tetragonal structure. It can be stable below Curie temperature, evolving slowly with decreasing temperature towards the commensurate structure, which is due to strong pinning of incommensurate domain walls. The phenomena can result from a competition between ferroelectric ordering and antiferroelectric ordering caused by the lanthanum modification.",

author = "Ding, \{X. J.\} and Xu, \{L. P.\} and Hu, \{Z. G.\} and Chen, \{X. F.\} and Wang, \{G. S.\} and Dong, \{X. L.\} and Chu, \{J. H.\}",

note = "Publisher Copyright: {\textcopyright} 2014 AIP Publishing LLC.",

year = "2014",

month = sep,

day = "29",

doi = "10.1063/1.4897357",

language = "英语",

volume = "105",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "13",

}

TY - JOUR

T1 - Phase diagram and incommensurate antiferroelectric structure in (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 ceramics discovered by band-to-band optical transitions

AU - Ding, X. J.

AU - Xu, L. P.

AU - Hu, Z. G.

AU - Chen, X. F.

AU - Wang, G. S.

AU - Dong, X. L.

AU - Chu, J. H.

PY - 2014/9/29

Y1 - 2014/9/29

N2 - Optical properties and phase transitions of (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 (PLZST 100x/42/40/18) ceramics with different compositions have been investigated by temperature dependent spectroscopic ellipsometry. Two interband critical points (E c p 1 and E c p 2) located at about 3.9 and 5.1 eV can be obtained by fitting standard line shapes to the second derivatives of the complex dielectric functions. Based on the band-to-band transitions, the phase diagram of PLZST ceramics can be well presented. Moreover, a peculiar incommensurate antiferroelectric state has been found to exist above the temperature of the normal commensurate antiferroelectric tetragonal structure. It can be stable below Curie temperature, evolving slowly with decreasing temperature towards the commensurate structure, which is due to strong pinning of incommensurate domain walls. The phenomena can result from a competition between ferroelectric ordering and antiferroelectric ordering caused by the lanthanum modification.

AB - Optical properties and phase transitions of (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O3 (PLZST 100x/42/40/18) ceramics with different compositions have been investigated by temperature dependent spectroscopic ellipsometry. Two interband critical points (E c p 1 and E c p 2) located at about 3.9 and 5.1 eV can be obtained by fitting standard line shapes to the second derivatives of the complex dielectric functions. Based on the band-to-band transitions, the phase diagram of PLZST ceramics can be well presented. Moreover, a peculiar incommensurate antiferroelectric state has been found to exist above the temperature of the normal commensurate antiferroelectric tetragonal structure. It can be stable below Curie temperature, evolving slowly with decreasing temperature towards the commensurate structure, which is due to strong pinning of incommensurate domain walls. The phenomena can result from a competition between ferroelectric ordering and antiferroelectric ordering caused by the lanthanum modification.

UR - https://www.scopus.com/pages/publications/84907830918

U2 - 10.1063/1.4897357

DO - 10.1063/1.4897357

M3 - 文章

AN - SCOPUS:84907830918

SN - 0003-6951

VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

M1 - 131909

ER -

Phase diagram and incommensurate antiferroelectric structure in (Pb_1-1.5_xLa_x)(Zr_0.42Sn_0.40Ti_0.18)O₃ ceramics discovered by band-to-band optical transitions

Abstract

Access to Document

Other files and links

Fingerprint

Cite this