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

A magneto-structural phase transition is investigated in single crystal CrNthin films grown by rf plasma molecular beam epitaxy on MgO(001) substrates.While still within the vacuum environment following MBE growth, $\it in-situ$low-temperature scanning tunneling microscopy, and $\it in-situ$ variablelow-temperature reflection high energy electron diffraction are applied,revealing an atomically smooth and metallic CrN(001) surface, and an $\itin-plane$ structural transition from 1$\times$1 (primitive CrN unit cell) to$\mathrm{\sqrt{2}\times\sqrt{2}-R45^\circ}$ with a transition temperature of$\sim$ 278 K, respectively. $\it Ex-situ$ temperature dependent measurementsare also performed, including x-ray diffraction and neutron diffraction,looking at the structural peaks and likewise revealing a first-order structuraltransition along both [001] and [111] $\it out-of-plane$ directions, withtransition temperatures of 256 K and 268 K, respectively. Turning to themagnetic peaks, neutron diffraction confirms a clear magnetic transition fromparamagnetic at room temperature to antiferromagnetic at low temperatures witha sharp, first-order phase transition and a N$\'{e}$el temperature of 270 K or280 K for two different films. In addition to the experimental measurements ofstructural and magnetic ordering, we also discuss results from first-principlestheoretical calculations which explore various possible magneto-structuralmodels.

Structural and Magnetic Phase Transitions in Chromium Nitride Thin Films Grown by RF Nitrogen Plasma Molecular Beam Epitaxy