Conceptual framework for dislocation-modified conductivity in oxide ceramics deconvoluting mesoscopic structure, core, and space charge exemplified for SrTiO3

L Porz, T Frömling, A Nakamura, N Li, R Maruyama… - ACS …, 2020 - ACS Publications
The introduction of dislocations is a recently proposed strategy to tailor the functional and
especially the electrical properties of ceramics. While several works confirm a clear impact of …

Donor and acceptor-like self-doping by mechanically induced dislocations in bulk TiO2

QK Muhammad, L Porz, A Nakamura, K Matsunaga… - Nano Energy, 2021 - Elsevier
Dislocations have been recently introduced as a novel tool to tailor the conductivity of
functional ceramics. However, tuning strategies suffer from poor insight into the structural …

Room‐temperature dislocation plasticity in SrTiO3 tuned by defect chemistry

S Stich, K Ding, QK Muhammad, L Porz… - Journal of the …, 2022 - Wiley Online Library
Dislocations have been identified to modify both the functional and mechanical properties of
some ceramic materials. Succinct control of dislocation‐based plasticity in ceramics will also …

Assessment of Strain-Generated Oxygen Vacancies Using SrTiO3 Bicrystals

SY Choi, SD Kim, M Choi, HS Lee, J Ryu, N Shibata… - Nano …, 2015 - ACS Publications
Atomic-scale defects strongly influence the electrical and optical properties of materials, and
their impact can be more pronounced in localized dimensions. Here, we directly …

Theoretical insights into the Peierls plasticity in SrTiO3 ceramics via dislocation remodelling

Y Li, X Liu, P Zhang, Y Han, M Huang, C Wan - Nature communications, 2022 - nature.com
An in-depth understanding of the dislocations motion process in non-metallic materials
becomes increasingly important, stimulated by the recent emergence of ceramics and …

Thermally enhanced dislocation density improves both hardness and fracture toughness in single‐crystal SrTiO3

MN Salem, K Ding, J Rödel… - Journal of the American …, 2023 - Wiley Online Library
Dislocation‐tuned functionality in ceramic oxides for potential versatile applications gains
increasing attention. As the widespread chemical doping suffers from poor temperature …

Atomic-scale structure relaxation, chemistry and charge distribution of dislocation cores in SrTiO3

P Gao, R Ishikawa, B Feng, A Kumamoto, N Shibata… - Ultramicroscopy, 2018 - Elsevier
By using the state-of-the-art microscopy and spectroscopy in aberration-corrected scanning
transmission electron microscopes, we determine the atomic arrangements, occupancy …

Mechanical tailoring of dislocation densities in SrTiO3 at room temperature

C Okafor, K Ding, X Zhou, K Durst… - Journal of the …, 2022 - Wiley Online Library
Dislocation‐tuned functional properties such as electrical conductivity, thermal conductivity,
and ferroelectric properties in oxides are attracting increasing research interest. A …

[HTML][HTML] Dislocation-enhanced electrical conductivity in rutile TiO2 accessed by room-temperature nanoindentation

H Bishara, H Tsybenko, S Nandy, QK Muhammad… - Scripta Materialia, 2022 - Elsevier
Dislocation-enhanced electrical conductivity is an emerging topic for ceramic oxides. In
contrast to the majority of present studies which focus on large-scale crystal deformation or …

Tunable Oxygen Diffusion and Electronic Conduction in SrTiO3 by Dislocation‐Induced Space Charge Fields

KK Adepalli, J Yang, J Maier… - Advanced Functional …, 2017 - Wiley Online Library
Plastic strain engineering was applied to induce controllable changes in electronic and
oxygen ion conductivity in oxides by orders of magnitude, without changing their nominal …