Impact of AC and DC electric fields on the microstructure evolution in strontium titanate

JH Preusker, MJ Hoffmann… - Advanced Engineering …, 2023 - Wiley Online Library
Herein, the impact of AC and DC electric fields on microstructure evolution in strontium
titanate is investigated. The focus is on nonthermal effects by using current‐blocking …

Grain growth in weak electric fields in strontium titanate: grain growth acceleration by defect redistribution

W Rheinheimer, M Fülling, MJ Hoffmann - Journal of the European Ceramic …, 2016 - Elsevier
The impact of DC electric fields on grain growth in strontium titanate is investigated between
1350° C and 1550° C for fields of up to 50 V/mm. To prevent joule heating by electrical …

Grain growth in strontium titanate in electric fields: The impact of space‐charge on the grain‐boundary mobility

W Rheinheimer, JP Parras, JH Preusker… - Journal of the …, 2019 - Wiley Online Library
This study investigates grain growth in the perovskite oxide strontium titanate in an electric
field. The seeded polycrystal technique was chosen as it provides a sensitive and controlled …

Ultra-fast high-temperature sintering of strontium titanate

TP Mishra, S Wang, C Lenser, D Jennings… - Acta Materialia, 2022 - Elsevier
Abstract Ultrafast High-temperature Sintering (UHS) is a novel sintering process enabling
extremely high heating rates by direct contact of sample to electrically heated thin carbon …

Defect redistribution along grain boundaries in SrTiO3 by externally applied electric fields

B Qu, D Eiteneer, LA Hughes, JH Preusker… - Journal of the European …, 2023 - Elsevier
During thermal annealing at 1425° C nominal electric field strengths of 50 V/mm and 150
V/mm were applied along the grain boundary planes of a near 45º (100) twist grain …

Grain growth anomaly and dielectric response in Ti-rich strontium titanate ceramics

L Amaral, M Fernandes, IM Reaney… - The Journal of …, 2013 - ACS Publications
A grain growth anomaly in Ti-rich strontium titanate ceramics is reported. Here we show that
three discontinuities on the temperature dependence of grain growth take place with drops …

The effect of electric field on sintering and electrical conductivity of titania

SK Jha, R Raj - Journal of the American Ceramic Society, 2014 - Wiley Online Library
The effect of DC electric field on sintering, and on the electrical conductivity of undoped
rutile, TiO 2 (99.99%), has been investigated at fields ranging from 0 V to 1000 V/cm. The …

Reversible electric field-induced structure changes in the near-surface region of strontium titanate

M Bobeth, N Farag, AA Levin, DC Meyer… - Journal of the Ceramic …, 2006 - jstage.jst.go.jp
X-ray analysis of the near-surface region of as-cut single-crystalline strontium titanate 001
wafers showed a reversible electric field-induced structure change at room temperature. To …

The impact of flash sintering on densification and plasticity of strontium titanate: high heating rates, dislocation nucleation and plastic flow

W Rheinheimer, XL Phuah, L Porz, M Scherer… - Journal of the European …, 2023 - Elsevier
Flash sintering involves very rapid densification of ceramic powder compacts during a
thermal runaway induced by an applied voltage and current. The mechanisms of fast …

Reactive intermediate phase cold sintering in strontium titanate

R Boston, J Guo, S Funahashi, AL Baker, IM Reaney… - RSC …, 2018 - pubs.rsc.org
Dense (> 96% theoretical) strontium titanate ceramics were fabricated at 950° C
(conventional sintering temperature> 1400° C) using a reactive intermediate phase cold …