In:
Advanced Functional Materials, Wiley, Vol. 30, No. 23 ( 2020-06)
Abstract:
Establishing condensed matters at their thermodynamically metastable or unstable structures demonstrates merit in the adjustability of their electronic structures, benefiting the discovery of emerging new material functionalities and applications. Herein, a molten‐salt assisted heterogeneous nucleation approach is demonstrated to significantly improve the effectiveness in batch synthesis of metastable perovskites correlated oxides, such as rare‐earth nickelates ( Re NiO 3 ) with various rare‐earth compositions. In contrast to their conventional synthesis via solid state reactions, herein the metastable Re NiO 3 is heterogeneously precipitated together with potassium chloride (KCl) within the liquid phase of KCl molten‐salt that effectively dissolves the Ni‐/ Re ‐ precursors and largely enhances their reaction homogeneity. With this solid base overcoming their synthesis metastabilities, the beyond conventional electronic transportation of Re NiO 3 under high pressure is explored. It breaks the conventional thermodynamic equilibrium and triggers the formation of new electronic structures associated with unstable insulating and metallic SmNiO 3 beyond already known manners. The unstable insulating SmNiO 3 exhibits nontemperature‐dependent transportation character similar to saturation or bad metals but preserves 2–3 orders higher electronic conductivity, while a kinetic related hysteresis is observed in the temperature‐dependent transportations of the unstable metallic SmNiO 3 . These discoveries with nonequilibrium correlated materials are worthy to be explored further.
Type of Medium:
Online Resource
ISSN:
1616-301X
,
1616-3028
DOI:
10.1002/adfm.202000987
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2029061-5
detail.hit.zdb_id:
2039420-2
SSG:
11
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