Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3–BaTiO3-based ceramics

Fazli Akram; Junchan Kim; Salman Ali Khan; Aurang Zeb; Hong Goo Yeo; Yeon Soo Sung; Tae Kwon Song; Myong Ho Kim; Soonil Lee

doi:10.1016/j.jallcom.2019.152878

Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO₃–BaTiO₃-based ceramics

Fazli Akram
, Junchan Kim
, Salman Ali Khan
, Aurang Zeb
, Hong Goo Yeo
, Yeon Soo Sung
, Tae Kwon Song
, Myong Ho Kim^*
, Soonil Lee

^*Corresponding author for this work

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

59 Scopus citations

Abstract

The effects of eco-friendly (BiNa_0.84K_0.16)_0.48Sr_0.04TiO₃ (BNKS)-content in 0.65Bi_1.05FeO₃–0.35BaTiO₃ (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable ε_r (670–1005, from 30 °C to 500 °C), high T_max (424 °C–465 °C), colossal ε_r-max (58880–69226), and ε_r-mid (2891–5652 ± 15%) across the broad range of temperature from 244 °C to 500 °C. At the optimum composition (x = 0.10) the temperature-dependent (30 °C–150 °C) substantially high energy-storage density (W_store ∼ 0.81 J/cm³) and efficiency (η > 60%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics.

Original language	English
Article number	152878
Journal	Journal of Alloys and Compounds
Volume	818
DOIs	https://doi.org/10.1016/j.jallcom.2019.152878
State	Published - 25 Mar 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

BiFeO−BaTiO
Dielectric
Energy storage
Ferroelectric
Relaxor

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2019.152878

Cite this

@article{415eb17d8fd24d769b06565e3f6747e1,

title = "Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3{\textendash}BaTiO3-based ceramics",

abstract = "The effects of eco-friendly (BiNa0.84K0.16)0.48Sr0.04TiO3 (BNKS)-content in 0.65Bi1.05FeO3{\textendash}0.35BaTiO3 (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94\%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable εr (670{\textendash}1005, from 30 °C to 500 °C), high Tmax (424 °C{\textendash}465 °C), colossal εr-max (58880{\textendash}69226), and εr-mid (2891{\textendash}5652 ± 15\%) across the broad range of temperature from 244 °C to 500 °C. At the optimum composition (x = 0.10) the temperature-dependent (30 °C{\textendash}150 °C) substantially high energy-storage density (Wstore ∼ 0.81 J/cm3) and efficiency (η > 60\%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics.",

keywords = "BiFeO−BaTiO, Dielectric, Energy storage, Ferroelectric, Relaxor",

author = "Fazli Akram and Junchan Kim and Khan, \{Salman Ali\} and Aurang Zeb and Yeo, \{Hong Goo\} and Sung, \{Yeon Soo\} and Song, \{Tae Kwon\} and Kim, \{Myong Ho\} and Soonil Lee",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = mar,

day = "25",

doi = "10.1016/j.jallcom.2019.152878",

language = "English",

volume = "818",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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T1 - Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3–BaTiO3-based ceramics

AU - Akram, Fazli

AU - Kim, Junchan

AU - Khan, Salman Ali

AU - Zeb, Aurang

AU - Yeo, Hong Goo

AU - Sung, Yeon Soo

AU - Song, Tae Kwon

AU - Kim, Myong Ho

AU - Lee, Soonil

PY - 2020/3/25

Y1 - 2020/3/25

N2 - The effects of eco-friendly (BiNa0.84K0.16)0.48Sr0.04TiO3 (BNKS)-content in 0.65Bi1.05FeO3–0.35BaTiO3 (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable εr (670–1005, from 30 °C to 500 °C), high Tmax (424 °C–465 °C), colossal εr-max (58880–69226), and εr-mid (2891–5652 ± 15%) across the broad range of temperature from 244 °C to 500 °C. At the optimum composition (x = 0.10) the temperature-dependent (30 °C–150 °C) substantially high energy-storage density (Wstore ∼ 0.81 J/cm3) and efficiency (η > 60%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics.

AB - The effects of eco-friendly (BiNa0.84K0.16)0.48Sr0.04TiO3 (BNKS)-content in 0.65Bi1.05FeO3–0.35BaTiO3 (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable εr (670–1005, from 30 °C to 500 °C), high Tmax (424 °C–465 °C), colossal εr-max (58880–69226), and εr-mid (2891–5652 ± 15%) across the broad range of temperature from 244 °C to 500 °C. At the optimum composition (x = 0.10) the temperature-dependent (30 °C–150 °C) substantially high energy-storage density (Wstore ∼ 0.81 J/cm3) and efficiency (η > 60%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics.

KW - BiFeO−BaTiO

KW - Dielectric

KW - Energy storage

KW - Ferroelectric

KW - Relaxor

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DO - 10.1016/j.jallcom.2019.152878

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