Influence of Excess Potassium on Structural and Ferroelectric Properties of Lead-Free Bi0.5K0.5TiO3 Thin Films

Nguyen Ngoc  Minh; Bui Van  Dan; Minh Duc Nguyen; Guus Rijnders; Ngo Duc Quan

doi:10.1166/jnn.2021.19117

Influence of Excess Potassium on Structural and Ferroelectric Properties of Lead-Free Bi_0.5K_0.5TiO₃ Thin Films

Nguyen Ngoc Minh
, Bui Van Dan
, Minh Duc Nguyen
, Guus Rijnders
, Ngo Duc Quan^*

^*Corresponding author for this work

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

145 Downloads (Pure)

Abstract

Lead-free Bi0.5K0.5TiO3 (BKT) ferroelectric films were synthesized on Pt/Ti/SiO2/Si substrates via the chemical solution deposition. The influence of the excess potassium on the microstructures and the ferroelectric properties of the films was investigated in detail. The results showed that the BKT films have reached the well-crystallized state in the single-phase perovskite structure with 20 mol.% excess amount of potassium. For this film, the ferroelectric properties of the films were significantly enhanced. The remnant polarization (Pr ) and maximum polarization (Pm ) reached the highest values of 9.4 μC/cm2 and 32.2 μC/cm2, respectively, under the electric field of 400 kV/cm.

Original language	English
Pages (from-to)	2681-2686
Journal	Journal of nanoscience and nanotechnology
Volume	21
Issue number	4
DOIs	https://doi.org/10.1166/jnn.2021.19117
Publication status	Published - 1 Apr 2021

Keywords

2022 OA procedure
Ferroelectric
Sol-Gel
BKT
Films
Lead-Free

Access to Document

10.1166/jnn.2021.19117

Minh2021influenceFinal published version, 11.1 MBLicence: Taverne

Cite this

@article{a797c2e8c2f6481d818015986c3211f8,

title = "Influence of Excess Potassium on Structural and Ferroelectric Properties of Lead-Free Bi0.5K0.5TiO3 Thin Films",

abstract = "Lead-free Bi0.5K0.5TiO3 (BKT) ferroelectric films were synthesized on Pt/Ti/SiO2/Si substrates via the chemical solution deposition. The influence of the excess potassium on the microstructures and the ferroelectric properties of the films was investigated in detail. The results showed that the BKT films have reached the well-crystallized state in the single-phase perovskite structure with 20 mol.\% excess amount of potassium. For this film, the ferroelectric properties of the films were significantly enhanced. The remnant polarization (Pr ) and maximum polarization (Pm ) reached the highest values of 9.4 μC/cm2 and 32.2 μC/cm2, respectively, under the electric field of 400 kV/cm.",

keywords = "2022 OA procedure, Ferroelectric, Sol-Gel, BKT, Films, Lead-Free",

author = "Minh, \{Nguyen Ngoc\} and Dan, \{Bui Van\} and Nguyen, \{Minh Duc\} and Guus Rijnders and Quan, \{Ngo Duc\}",

year = "2021",

month = apr,

day = "1",

doi = "10.1166/jnn.2021.19117",

language = "English",

volume = "21",

pages = "2681--2686",

journal = "Journal of nanoscience and nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

number = "4",

}

TY - JOUR

T1 - Influence of Excess Potassium on Structural and Ferroelectric Properties of Lead-Free Bi0.5K0.5TiO3 Thin Films

AU - Minh, Nguyen Ngoc

AU - Dan, Bui Van

AU - Nguyen , Minh Duc

AU - Rijnders, Guus

AU - Quan, Ngo Duc

PY - 2021/4/1

Y1 - 2021/4/1

N2 - Lead-free Bi0.5K0.5TiO3 (BKT) ferroelectric films were synthesized on Pt/Ti/SiO2/Si substrates via the chemical solution deposition. The influence of the excess potassium on the microstructures and the ferroelectric properties of the films was investigated in detail. The results showed that the BKT films have reached the well-crystallized state in the single-phase perovskite structure with 20 mol.% excess amount of potassium. For this film, the ferroelectric properties of the films were significantly enhanced. The remnant polarization (Pr ) and maximum polarization (Pm ) reached the highest values of 9.4 μC/cm2 and 32.2 μC/cm2, respectively, under the electric field of 400 kV/cm.

AB - Lead-free Bi0.5K0.5TiO3 (BKT) ferroelectric films were synthesized on Pt/Ti/SiO2/Si substrates via the chemical solution deposition. The influence of the excess potassium on the microstructures and the ferroelectric properties of the films was investigated in detail. The results showed that the BKT films have reached the well-crystallized state in the single-phase perovskite structure with 20 mol.% excess amount of potassium. For this film, the ferroelectric properties of the films were significantly enhanced. The remnant polarization (Pr ) and maximum polarization (Pm ) reached the highest values of 9.4 μC/cm2 and 32.2 μC/cm2, respectively, under the electric field of 400 kV/cm.

KW - 2022 OA procedure

KW - Ferroelectric

KW - Sol-Gel

KW - BKT

KW - Films

KW - Lead-Free

U2 - 10.1166/jnn.2021.19117

DO - 10.1166/jnn.2021.19117

M3 - Article

SN - 1533-4880

VL - 21

SP - 2681

EP - 2686

JO - Journal of nanoscience and nanotechnology

JF - Journal of nanoscience and nanotechnology

IS - 4

ER -