Band gap narrowing and electrical properties of (1-x)BaTiO3-xSrFe0.5Nb0.5O3 lead-free ceramics

Jianxin Chen; Hongmei Deng; Dongliang Zheng; Yanlin Pan; Shufang Si; Yuemin Zhang; Pingxiong Yang; Junhao Chu

doi:10.1007/s10854-021-05672-5

Band gap narrowing and electrical properties of (1-x)BaTiO_3-xSrFe_0.5Nb_0.5O₃ lead-free ceramics

Jianxin Chen
, Hongmei Deng
, Dongliang Zheng
, Yanlin Pan
, Shufang Si
, Yuemin Zhang
, Pingxiong Yang^*
, Junhao Chu

^*Corresponding author for this work

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

3 Scopus citations

Abstract

The composite materials in the form of (1-x)BaTiO₃-xSrFe_0.5Nb_0.5O₃((1-x)BT-xSFN) are synthesized via the solid-state reaction route. Structure, optical behaviors, and electrical properties of (1-x)BT-xSFN are studied. It can be noted that the structure of the synthesized solid solution changes from the tetragonal phase to the cubic phase with increase of x-value. Due to the increase in content of double perovskite SFN, the optical band gaps of doped BT decrease to a minimum of 2.66 eV, which is smaller than that of pure BT (3.21 eV). However, the ferroelectric property deteriorates with the addition of dopants, which result from the lattice distortion caused by the substitution of Sr²⁺ and Fe³⁺/Nb⁵⁺ for Ba²⁺ and Ti⁴⁺, respectively. These results provide new insights into the control of the structure, optical behaviors and ferroelectric properties in BT-based oxides.

Original language	English
Pages (from-to)	10151-10159
Number of pages	9
Journal	Journal of Materials Science: Materials in Electronics
Volume	32
Issue number	8
DOIs	https://doi.org/10.1007/s10854-021-05672-5
State	Published - Apr 2021
Externally published	Yes

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title = "Band gap narrowing and electrical properties of (1-x)BaTiO3-xSrFe0.5Nb0.5O3 lead-free ceramics",

abstract = "The composite materials in the form of (1-x)BaTiO3-xSrFe0.5Nb0.5O3((1-x)BT-xSFN) are synthesized via the solid-state reaction route. Structure, optical behaviors, and electrical properties of (1-x)BT-xSFN are studied. It can be noted that the structure of the synthesized solid solution changes from the tetragonal phase to the cubic phase with increase of x-value. Due to the increase in content of double perovskite SFN, the optical band gaps of doped BT decrease to a minimum of 2.66 eV, which is smaller than that of pure BT (3.21 eV). However, the ferroelectric property deteriorates with the addition of dopants, which result from the lattice distortion caused by the substitution of Sr2+ and Fe3+/Nb5+ for Ba2+ and Ti4+, respectively. These results provide new insights into the control of the structure, optical behaviors and ferroelectric properties in BT-based oxides.",

author = "Jianxin Chen and Hongmei Deng and Dongliang Zheng and Yanlin Pan and Shufang Si and Yuemin Zhang and Pingxiong Yang and Junhao Chu",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2021",

month = apr,

doi = "10.1007/s10854-021-05672-5",

language = "英语",

volume = "32",

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TY - JOUR

T1 - Band gap narrowing and electrical properties of (1-x)BaTiO3-xSrFe0.5Nb0.5O3 lead-free ceramics

AU - Chen, Jianxin

AU - Deng, Hongmei

AU - Zheng, Dongliang

AU - Pan, Yanlin

AU - Si, Shufang

AU - Zhang, Yuemin

AU - Yang, Pingxiong

AU - Chu, Junhao

PY - 2021/4

Y1 - 2021/4

N2 - The composite materials in the form of (1-x)BaTiO3-xSrFe0.5Nb0.5O3((1-x)BT-xSFN) are synthesized via the solid-state reaction route. Structure, optical behaviors, and electrical properties of (1-x)BT-xSFN are studied. It can be noted that the structure of the synthesized solid solution changes from the tetragonal phase to the cubic phase with increase of x-value. Due to the increase in content of double perovskite SFN, the optical band gaps of doped BT decrease to a minimum of 2.66 eV, which is smaller than that of pure BT (3.21 eV). However, the ferroelectric property deteriorates with the addition of dopants, which result from the lattice distortion caused by the substitution of Sr2+ and Fe3+/Nb5+ for Ba2+ and Ti4+, respectively. These results provide new insights into the control of the structure, optical behaviors and ferroelectric properties in BT-based oxides.

AB - The composite materials in the form of (1-x)BaTiO3-xSrFe0.5Nb0.5O3((1-x)BT-xSFN) are synthesized via the solid-state reaction route. Structure, optical behaviors, and electrical properties of (1-x)BT-xSFN are studied. It can be noted that the structure of the synthesized solid solution changes from the tetragonal phase to the cubic phase with increase of x-value. Due to the increase in content of double perovskite SFN, the optical band gaps of doped BT decrease to a minimum of 2.66 eV, which is smaller than that of pure BT (3.21 eV). However, the ferroelectric property deteriorates with the addition of dopants, which result from the lattice distortion caused by the substitution of Sr2+ and Fe3+/Nb5+ for Ba2+ and Ti4+, respectively. These results provide new insights into the control of the structure, optical behaviors and ferroelectric properties in BT-based oxides.

UR - https://www.scopus.com/pages/publications/85102806311

U2 - 10.1007/s10854-021-05672-5

DO - 10.1007/s10854-021-05672-5

M3 - 文章

AN - SCOPUS:85102806311

SN - 0957-4522

VL - 32

SP - 10151

EP - 10159

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 8

ER -

Band gap narrowing and electrical properties of (1-x)BaTiO_3-xSrFe_0.5Nb_0.5O₃ lead-free ceramics

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