Dielectric and ferroelectric properties of Nb doped BNT-based relaxor ferroelectrics

Adnan Maqbool; Ali Hussain; Rizwan Ahmed Malik; Arif Zaman; Tae Kwon Song; Won Jeong Kim; Myong Ho Kim

doi:10.3740/MRSK.2015.25.7.317

Dielectric and ferroelectric properties of Nb doped BNT-based relaxor ferroelectrics

Adnan Maqbool
, Ali Hussain
, Rizwan Ahmed Malik
, Arif Zaman
, Tae Kwon Song
, Won Jeong Kim
, Myong Ho Kim

Changwon National University

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

9 Scopus citations

Abstract

The effects of Nb doping on the crystal structure, microstructure, and dielectric ferroelectric and piezoelectric properties of (Bi_0.5Na_0.5)_0.935Ba_0.065Ti_(1-x)Nb_xO₃-0.01SrZrO₃ (BNBTNb-SZ, with x = 0, 0.01 and 0.02) ceramics have been investigated. X-ray diffraction patterns revealed that all ceramics have a pure perovskite structure with tetragonal symmetry. The grain size of the ceramics slightly decreased and a change in grain morphology from square to spherical shape was observed in the Nb-doped samples. The maximum dielectric constant temperature (T_m) increases with increasing amount of Nb; however, ferroelectric-relaxor transition temperature (T_F-R) and maximum dielectric constant (ε_m) values decrease gradually. Nb addition disrupted the polarization hysteresis loops of the BNBT-SZ ceramics by leading a reduction in the remnant polarization coercive field and piezoelectric constant.

Original language	English
Pages (from-to)	317-321
Number of pages	5
Journal	Korean Journal of Materials Research
Volume	25
Issue number	7
DOIs	https://doi.org/10.3740/MRSK.2015.25.7.317
State	Published - 2015
Externally published	Yes

Keywords

Dielectric properties
Ferroelectricity
Lead-free
Relaxor ferroelectrics

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10.3740/MRSK.2015.25.7.317

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@article{5bb6187d76404d8bad4a5e76fcab7843,

title = "Dielectric and ferroelectric properties of Nb doped BNT-based relaxor ferroelectrics",

abstract = "The effects of Nb doping on the crystal structure, microstructure, and dielectric ferroelectric and piezoelectric properties of (Bi0.5Na0.5)0.935Ba0.065Ti(1-x)NbxO3-0.01SrZrO3 (BNBTNb-SZ, with x = 0, 0.01 and 0.02) ceramics have been investigated. X-ray diffraction patterns revealed that all ceramics have a pure perovskite structure with tetragonal symmetry. The grain size of the ceramics slightly decreased and a change in grain morphology from square to spherical shape was observed in the Nb-doped samples. The maximum dielectric constant temperature (Tm) increases with increasing amount of Nb; however, ferroelectric-relaxor transition temperature (TF-R) and maximum dielectric constant (εm) values decrease gradually. Nb addition disrupted the polarization hysteresis loops of the BNBT-SZ ceramics by leading a reduction in the remnant polarization coercive field and piezoelectric constant.",

keywords = "Dielectric properties, Ferroelectricity, Lead-free, Relaxor ferroelectrics",

author = "Adnan Maqbool and Ali Hussain and Malik, \{Rizwan Ahmed\} and Arif Zaman and Song, \{Tae Kwon\} and Kim, \{Won Jeong\} and Kim, \{Myong Ho\}",

note = "Publisher Copyright: {\textcopyright} 2015 Materials Research Society of Korea.",

year = "2015",

doi = "10.3740/MRSK.2015.25.7.317",

language = "English",

volume = "25",

pages = "317--321",

journal = "Korean Journal of Materials Research",

issn = "1225-0562",

publisher = "Korea Federation of Science and Technology",

number = "7",

}

TY - JOUR

T1 - Dielectric and ferroelectric properties of Nb doped BNT-based relaxor ferroelectrics

AU - Maqbool, Adnan

AU - Hussain, Ali

AU - Malik, Rizwan Ahmed

AU - Zaman, Arif

AU - Song, Tae Kwon

AU - Kim, Won Jeong

AU - Kim, Myong Ho

PY - 2015

Y1 - 2015

N2 - The effects of Nb doping on the crystal structure, microstructure, and dielectric ferroelectric and piezoelectric properties of (Bi0.5Na0.5)0.935Ba0.065Ti(1-x)NbxO3-0.01SrZrO3 (BNBTNb-SZ, with x = 0, 0.01 and 0.02) ceramics have been investigated. X-ray diffraction patterns revealed that all ceramics have a pure perovskite structure with tetragonal symmetry. The grain size of the ceramics slightly decreased and a change in grain morphology from square to spherical shape was observed in the Nb-doped samples. The maximum dielectric constant temperature (Tm) increases with increasing amount of Nb; however, ferroelectric-relaxor transition temperature (TF-R) and maximum dielectric constant (εm) values decrease gradually. Nb addition disrupted the polarization hysteresis loops of the BNBT-SZ ceramics by leading a reduction in the remnant polarization coercive field and piezoelectric constant.

AB - The effects of Nb doping on the crystal structure, microstructure, and dielectric ferroelectric and piezoelectric properties of (Bi0.5Na0.5)0.935Ba0.065Ti(1-x)NbxO3-0.01SrZrO3 (BNBTNb-SZ, with x = 0, 0.01 and 0.02) ceramics have been investigated. X-ray diffraction patterns revealed that all ceramics have a pure perovskite structure with tetragonal symmetry. The grain size of the ceramics slightly decreased and a change in grain morphology from square to spherical shape was observed in the Nb-doped samples. The maximum dielectric constant temperature (Tm) increases with increasing amount of Nb; however, ferroelectric-relaxor transition temperature (TF-R) and maximum dielectric constant (εm) values decrease gradually. Nb addition disrupted the polarization hysteresis loops of the BNBT-SZ ceramics by leading a reduction in the remnant polarization coercive field and piezoelectric constant.

KW - Dielectric properties

KW - Ferroelectricity

KW - Lead-free

KW - Relaxor ferroelectrics

UR - https://www.scopus.com/pages/publications/84945958058

U2 - 10.3740/MRSK.2015.25.7.317

DO - 10.3740/MRSK.2015.25.7.317

M3 - Article

AN - SCOPUS:84945958058

SN - 1225-0562

VL - 25

SP - 317

EP - 321

JO - Korean Journal of Materials Research

JF - Korean Journal of Materials Research

IS - 7

ER -

Dielectric and ferroelectric properties of Nb doped BNT-based relaxor ferroelectrics

Abstract

Keywords

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