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

In spinel-type nickelate NiRh$_2$O$_4$, magnetic ordering is observed uponthe sample synthesized via kinetically controlled low-temperature solid-statemetathesis, as opposed to previously-reported samples obtained throughconventional solid-state reaction. Our findings are based on a combination ofbulk susceptibility and specific heat measurements that disclose a N$\'e$eltransition temperature of $T_N$ = 45 K in this material, which might featurespin-orbit entanglement in the tetragonally-coordinated $d^8$ Mott insulators.The emergence of magnetic ordering upon alteration of the synthesis routeindicates that the suppression of magnetic ordering in the previous sample wasrooted in the cation-mixing assisted by the entropy gain that results fromhigh-temperature reactions. Furthermore, the $J_{\rm eff}$ = 0 physics, insteadof solely the spin-only $S = 1$, describes the observed enhancement ofeffective magnetic moment well. Overseeing all observations and speculations,we propose that the possible mechanism responsible for the emergent magneticorderings in NiRh$_2$O$_4$ is the condensation of $J_{\rm eff}$ = 0 exciton,driven by the interplay of the tetragonal crystal field and superexchangeinteractions.

Magnetic ordering in the $J_{\rm eff}$ = 0 Nickelate NiRh$_2$O$_4$ prepared via a solid-state metathesis