Results 81 to 90 of about 18,116 (135)

Room‐temperature dislocation plasticity in ceramics: Methods, materials, and mechanisms

Journal of the American Ceramic Society, EarlyView.
Abstract Dislocation‐mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research history of dislocations as one‐dimensional lattice defects in crystalline solids, the understanding of plastically deformable ceramics at room temperature seems ...
Alexander Frisch, Chukwudalu Okafor, Oliver Preuß, Jiawen Zhang, Katsuyuki Matsunaga, Atsutomo Nakamura, Wenjun Lu, Xufei Fang   +7 more
wiley   +1 more source

Enhanced domain dynamics in alternating current poled rhombohedral Pb(Mg1/3Nb2/3)O3–PbTiO3 single crystals

Journal of the American Ceramic Society, EarlyView.
AC‐poled rhombohedral [001] PMN‐PT single crystals exhibit increased permittivity and piezoelectric coefficient while demonstrating enhanced domain dynamics under electric fields, as confirmed by time‐resolved correlation analysis. Abstract The understanding of domain dynamics in ferroelectric materials is crucial for optimizing their performance in ...
Jeong‐Woo Sun, Andrei Fluerasu, Zhengze Xu, Sipan Liu, Sang‐Goo Lee, Wook Jo, Xiaoning Jiang, Jong Eun Ryu   +7 more
wiley   +1 more source

Domain structure and piezoelectric property of Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics polarized by pulse‐poling method

Journal of the American Ceramic Society, EarlyView.
Abstract The domain structures and piezoelectric properties of polycrystalline orthorhombic 0.5(Ba0.7Ca0.3)TiO3‒0.5Ba(Zr0.2Ti0.8)O3 (BCZT50) polarized by various poling methods were investigated. Semiquantitative analysis using a scanning electron microscope revealed that the domain size dD of BCZT50 polarized by alternating current poling (AC‐poling ...
Takumi Nozaki, Alexander Martin, Kyle G. Webber, Tadachika Nakayama, Ken‐ichi Kakimoto   +4 more
wiley   +1 more source

Study on recycling of lead‐based piezoceramics using trimethylchloromethyl ammonium‐based halide perovskite binder

Journal of the American Ceramic Society, EarlyView.
Abstract Oxide‐halide perovskite upside‐down composites have been demonstrated for recycling heavy‐eco‐footprint piezoceramics. However, options for the binders are limited. As the binder significantly affects the electrical properties of the recycled materials, the available binder material pool needs to be expanded.
Mohadeseh Tabeshfar, Mikko Nelo, Sivagnana Sundaram Anandakrishnan, Jani Peräntie, Yang Bai   +4 more
wiley   +1 more source

The origin of charged domains on the surface of ferroelastic BiVO4 co‐doped with sodium and molybdenum

Journal of the American Ceramic Society, Volume 108, Issue 7, July 2025.
Abstract Ferroelastic BiVO4 has charged surface domains, even though its crystal structure is non‐polar. These charged domains can be detected by piezo‐force microscopy and lead to spatially selective photochemical reactions. The photochemical reactivity of (Bi0.96Na0.04)(V0.92Mo0.08)O4 is studied above and below the ferroelastic transition temperature
Ajay S. Pisat, Jackson C. Adler, Paul A. Salvador, Gregory S. Rohrer   +3 more
wiley   +1 more source

From Donor‐Acceptor Ligands to Smart Coordination Polymers: Cyanothiazole‐Cu(I) Complexes for Multifunctional Electronic Devices

Chemistry – A European Journal, Volume 31, Issue 31, June 3, 2025.
Cyanothiazoles, paired with copper(I) iodide, form complexes with luminescent properties. X‐ray crystallography revealed two types of coordination polymers, while spectroscopic, synchrotron, and electric measurements supported by density functional (DFT) calculations studies highlighted their unique electronic features, offering a foundation for future
Karolina Gutmańska, Agnieszka Podborska, Tomasz Mazur, Andrzej Sławek, Ramesh Sivasamy, Alexey Maximenko, Łukasz Orzeł, Janusz Oszajca, Grażyna Stochel, Amarjith V. Dev, Chakkooth Vijayakumar, Konrad Szaciłowski, Anna Dołęga   +12 more
wiley   +1 more source

Individual dislocation identification in dark‐field X‐ray microscopy

Journal of Applied Crystallography, Volume 58, Issue 3, Page 813-821, June 2025.
Experimental and simulated dark‐field X‐ray microscopy images of isolated dislocations in bulk single‐crystal aluminium were combined to identify the Burgers vector, slip plane and line direction of the dislocations. Burgers vector identification missed only the sign, and the line direction was determined with an error of less than 10°, sufficient for ...
Sina Borgi, Grethe Winther, Henning Friis Poulsen   +2 more
wiley   +1 more source

Tailoring charge transport in BaTiO3 crystals through dislocation engineering

Journal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
Abstract Dislocations in oxide ceramics significantly influence their physical properties by creating substantial local strain fields, new electronic states, and space‐charge layers. In this study, we investigated the effects of mechanically introduced dislocations on the electrical conductivity of BaTiO3 single crystals.
Ahmad Sayyadi‐Shahraki, Till Frömling, Fangping Zhuo   +2 more
wiley   +1 more source

Dislocation‐induced local symmetry reduction in single‐crystal KNbO3 observed by Raman spectroscopy

Journal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
Abstract In recent years, dislocation‐tuned functionalized ceramics have become one of the focal points of modern materials research due to their outstanding properties. These range from improved electrical conductivity and ferroelectric properties to dislocation‐enhanced toughening and superconductivity, caused by local strain fields.
Felix Drechsler, Cameliu Himcinschi, Oliver Preuß, Xufei Fang, Jens Kortus   +4 more
wiley   +1 more source

Preferential chemical oxygen diffusion along dislocation networks in SrTiO3

Journal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
Abstract The properties of SrTiO3 (STO), a well‐known and often employed model material of transition metal oxides with perovskite structure, have been the subject of numerous studies over the last decades. However, even fundamental mechanisms such as the reaction of STO to changes in oxygen activity are still not yet fully understood.
Christian Rodenbücher, Katarzyna Balin, Marcin Wojtyniak, Astrid Besmehn, Carsten Korte, Krzysztof Szot   +5 more
wiley   +1 more source