Enhancement of Aurivillius phase formation kinetics in SBT thin films using nanoparticle seeding

Yun Mo Sung; Woo Chul Kwak; Se Yon Jung; Seung Joon Hwang

doi:10.1557/proc-784-c11.55

Enhancement of Aurivillius phase formation kinetics in SBT thin films using nanoparticle seeding

Yun Mo Sung, Woo Chul Kwak, Se Yon Jung, Seung Joon Hwang

Research output: Contribution to journal › Conference article › peer-review

Abstract

Pt/Ti/SiO₂/Si substrates seeded by SBT nanoparticles (∼60-80 nm) were used to enhance the phase formation kinetics of Sr _0.7Bi_2.4Ta₂O₉ (SBT) thin films. The volume fractions of Aurivillius phase formation obtained through quantitative x-ray diffraction (Q-XRD) analyses showed highly enhanced kinetics in seeded SBT thin films, The Avrami exponents were determined as ∼1.4 and ∼0.9 for unseeded and seeded SBT films, respectively, which reveals different nucleation modes. By using Arrhenius-type plots the activation energy values for the phase transformation of unseeded and seeded SBT thin films were determined to be ∼264 and ∼168 kJ/mol, respectively. This gives a key reason to the enhanced kinetics in seeded films. Microstructural analyses on unseeded SBT thin films showed formation of randomly oriented needle-like crystals, while those on seeded ones showed formation of domains comprised of directionally grown worm-like crystals.

Original language	English
Pages (from-to)	169-174
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	784
DOIs	https://doi.org/10.1557/proc-784-c11.55
Publication status	Published - 2003
Externally published	Yes
Event	Ferroelectric Thin Films XII - Boston, MA, United States Duration: 2003 Dec 1 → 2003 Dec 4

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{25de336193014140b890018d8988c7c5,

title = "Enhancement of Aurivillius phase formation kinetics in SBT thin films using nanoparticle seeding",

abstract = "Pt/Ti/SiO2/Si substrates seeded by SBT nanoparticles (∼60-80 nm) were used to enhance the phase formation kinetics of Sr 0.7Bi2.4Ta2O9 (SBT) thin films. The volume fractions of Aurivillius phase formation obtained through quantitative x-ray diffraction (Q-XRD) analyses showed highly enhanced kinetics in seeded SBT thin films, The Avrami exponents were determined as ∼1.4 and ∼0.9 for unseeded and seeded SBT films, respectively, which reveals different nucleation modes. By using Arrhenius-type plots the activation energy values for the phase transformation of unseeded and seeded SBT thin films were determined to be ∼264 and ∼168 kJ/mol, respectively. This gives a key reason to the enhanced kinetics in seeded films. Microstructural analyses on unseeded SBT thin films showed formation of randomly oriented needle-like crystals, while those on seeded ones showed formation of domains comprised of directionally grown worm-like crystals.",

author = "Sung, {Yun Mo} and Kwak, {Woo Chul} and Jung, {Se Yon} and Hwang, {Seung Joon}",

year = "2003",

doi = "10.1557/proc-784-c11.55",

language = "English",

volume = "784",

pages = "169--174",

journal = "Materials Research Society Symposium Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Ferroelectric Thin Films XII ; Conference date: 01-12-2003 Through 04-12-2003",

}

TY - JOUR

T1 - Enhancement of Aurivillius phase formation kinetics in SBT thin films using nanoparticle seeding

AU - Sung, Yun Mo

AU - Kwak, Woo Chul

AU - Jung, Se Yon

AU - Hwang, Seung Joon

PY - 2003

Y1 - 2003

N2 - Pt/Ti/SiO2/Si substrates seeded by SBT nanoparticles (∼60-80 nm) were used to enhance the phase formation kinetics of Sr 0.7Bi2.4Ta2O9 (SBT) thin films. The volume fractions of Aurivillius phase formation obtained through quantitative x-ray diffraction (Q-XRD) analyses showed highly enhanced kinetics in seeded SBT thin films, The Avrami exponents were determined as ∼1.4 and ∼0.9 for unseeded and seeded SBT films, respectively, which reveals different nucleation modes. By using Arrhenius-type plots the activation energy values for the phase transformation of unseeded and seeded SBT thin films were determined to be ∼264 and ∼168 kJ/mol, respectively. This gives a key reason to the enhanced kinetics in seeded films. Microstructural analyses on unseeded SBT thin films showed formation of randomly oriented needle-like crystals, while those on seeded ones showed formation of domains comprised of directionally grown worm-like crystals.

AB - Pt/Ti/SiO2/Si substrates seeded by SBT nanoparticles (∼60-80 nm) were used to enhance the phase formation kinetics of Sr 0.7Bi2.4Ta2O9 (SBT) thin films. The volume fractions of Aurivillius phase formation obtained through quantitative x-ray diffraction (Q-XRD) analyses showed highly enhanced kinetics in seeded SBT thin films, The Avrami exponents were determined as ∼1.4 and ∼0.9 for unseeded and seeded SBT films, respectively, which reveals different nucleation modes. By using Arrhenius-type plots the activation energy values for the phase transformation of unseeded and seeded SBT thin films were determined to be ∼264 and ∼168 kJ/mol, respectively. This gives a key reason to the enhanced kinetics in seeded films. Microstructural analyses on unseeded SBT thin films showed formation of randomly oriented needle-like crystals, while those on seeded ones showed formation of domains comprised of directionally grown worm-like crystals.

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U2 - 10.1557/proc-784-c11.55

DO - 10.1557/proc-784-c11.55

M3 - Conference article

AN - SCOPUS:2942650915

SN - 0272-9172

VL - 784

SP - 169

EP - 174

JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

T2 - Ferroelectric Thin Films XII

Y2 - 1 December 2003 through 4 December 2003

ER -

Enhancement of Aurivillius phase formation kinetics in SBT thin films using nanoparticle seeding

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