Topotactic 뜻
WebJul 1, 1990 · Pioneered by Kohlschütter [35] and Feitknecht [36] renewed by Boldyrev [37], the term topochemistry (from Greek τoπoσ meaning site) is now largely employed in materials science. It defines conversion mechanisms where the transformation is involving reactive sites associated to diffusion at the interface although leaving intact the whole ... WebApr 22, 2024 · Topotactic Hydrogen in Nickelate Superconductors and Akin Infinite-Layer Oxides A B O 2 Liang Si, Wen Xiao, Josef Kaufmann, Jan M. Tomczak, Yi Lu, Zhicheng …
Topotactic 뜻
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WebJul 25, 2016 · topotactic (comparative more topotactic, superlative most topotactic) ( chemistry ) Describing a transformation, within a crystal lattice , involving the displacement or exchange of atoms. Retrieved from " … WebWe investigated the polyvinylidene fluoride (PVDF)-mediated topotactic fluorination of two perovskite ruthenate thin films with different crystallographic structures, non-layered perovskite SrRuO 3 and layered perovskite Sr 2 RuO 4.While the former ruthenate did not react with PVDF, the latter was fluorinated to form Sr 2 RuO 3 F 2 with a structure that …
WebApr 29, 2024 · Here, we report real-time observation of topotactic reaction throughout the multi-electron transfer process in magnetite, unveiled by in situ single-crystal crystallography with corroboration of first principles calculations. Contradicting the traditional belief of causing structural breakdown, conversion in magnetite resembles an intercalation ... Webtopotactic 뜻 EN. Definition of topotactic in English Dictionary; 형용사 (Adjective) COM more topotactic SUP most topotactic PRE topo-SUF-tactic (chemistry) Describing a transformation, within a crystal lattice, involving the displacement or exchange of atoms. 품사 계층 (Part-of-Speech Hierarchy)
WebA new topotactic oxidation was developed using the solid-state oxidant Zr-doped CeO 2.For the anti-ThCr 2 Si 2 type Y 2 O 2 Bi, which became superconducting via oxygen intercalation during solid-state oxidation at 1000 °C, the topotactic oxidation enabled not only the oxygen intercalation at a much lower temperature of 200 °C, hampering the segregation of … WebA serious difficulty with the claims for a biogenic origin of the magnetites is that the majority of them exhibit topotactic crystallographic relationships with the host carbonates (i.e., …
WebApr 7, 2024 · Topotactic cation exchange on close-packed structures has recently emerged as a potent synthetic tactic for the preparation of many new functional solids. A synergistic blending of new functionality to an underlying three-dimensional structure can be achieved that, in many cases, yields a unique pathway to metastable solids with new and/or …
WebJul 19, 2013 · Pulsed laser epitaxy of brownmillerite SrCoO2.5 thin films and their phase transformation to the perovskite SrCoO3-δ are investigated. While the direct growth of the fully oxidized perovskite films is found to be an arduous task, filling some of oxygen vacancies into SrCoO2.5 by topotactic oxidation accompanies systematic evolution of … defining attributesIn chemistry, a topotactic transition involves a structural change to a crystalline solid, which may include loss or gain of material, so that the final lattice is related to that of the original material by one or more crystallographically equivalent, orientational relationships. An example is a transition in which the relative structure of the anionic array is unaltered but the cations reorganize as in: feinstein\u0027s list of 205 proposed banned gunsWebSep 11, 1999 · The capability of sodium hydride as a reducing agent in oxide deintercalation reactions is explored. The Ni(III) perovskite LaNiO3 can be reduced topotactically to LaNiO2, isostructural with the “infinite layer” cuprates, using solid sodium hydride in a sealed evacuated tube at 190 ≤ T/°C ≤ 210, and a similar infinite-layer phase is prepared by … defining attributes of comfort