English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

An unusual atomic scale chemical fluctuation in LaSrVMoO$_6$, in terms ofnarrow patches of La,V and Sr,Mo-rich phases, has been probed in detail tounderstand the origin of such a chemical state. Exhaustive tuning of theequilibrium synthesis parameters showed that the extent of phase separation cannever be melted down below an unit cell dimension making it impossible toachieve the conventional $B$-site ordered structure, which establishes that theobserved `inhomogeneous' patch-like structure with minimum dimension of fewangstroms is a reality in LaSrVMoO$_6$. Therefore, another type of localchemical order, hitherto unknown in double perovskites, gets introduced here.X-ray diffraction, electron microscopy elemental mapping, magnetic, and variousspectroscopic studies have been carried out on samples, synthesized underdifferent conditions. These experimental results in conjunction with {\itab-initio} electronic structure calculation revealed that it is the energystability, gained by typical La-O covalency as in LaVO$_3$, that leads to thepreferential La,V and Sr,Mo ionic proximity, and the consequent patchystructure.

LaSrVMoO$_6$: A case study for $A$-site covalency-driven local cationic order in double perovskites