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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

\SCWO is a tetragonal ($I4/m$) double perovskite with diamagnetic W$^{6+}$(5d$^0$) and (Jahn-Teller-active) Cu$^{2+}$ (3$d^9$) in a rocksalt-orderedarrangement on the B sites, modelling an anisotropic fcc-latticeantiferromagnet with $S=1/2$. We have studied the magnetic structure, dynamicsand thermodynamic properties of this material above and below the\Neel{}-ordering transition at $T_{\textrm{N}} = 24$~K. Muon spin relaxationspectroscopy, neutron diffraction and neutron spectroscopy experiments showthat the transition at $T_{\textrm{N}}$ on heating is from static 3D type-2antiferromagnetism to 2D dynamic correlations that remain detectable up to100~K. Above $T_{\textrm{N}}$ the muon relaxation is described by a compressedexponential decay, revealing a strong correlation between the spin fluctuationrate and the 2D correlation length. The low-temperature muon data and theentropy release around $T_{\textrm{N}}$ as obtained from the heat capacity datapoint to small magnetic domains, probably of the order of 60~\AA{}. We notethat the material behaves more like a quasi-2D square lattice antiferromagnetthan could be expected considering its structure only. A possible explanationmight lie in the unusual strong spin-orbit-coupled magnetism of the W 5$d$levels, as the dominant exchange interaction is via the Cu-O-W-O-Cu pathway.

From 3D static order to 2D dynamic correlations in the tetragonal double perovskite Sr2CuWO6