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

We have studied the magnetism of the Pr3+ ions in PrFeAsO_1-xF_x (x = 0;0.15) and its interaction with the Fe magnetic order (for x = 0). Specific heatdata confirm the presence of a first excited crystal electric field (CEF) levelaround 3.5 meV in the undoped compound PrFeAsO. This finding is in agreementwith recent neutron scattering experiments. The doped compound is found to havea much lower first CEF splitting of about 2.0 meV. The Pr ordering in PrFeAsOgives rise to large anomalies in the specific heat and the thermal expansioncoefficient. In addition, a field-induced transition is found at lowtemperatures that is most pronounced for the magnetostriction coefficient. Thistransition, which is absent in the doped compound, is attributed to a reversalof the Fe spin canting as the antiferromagnetic Pr order is destroyed by theexternal magnetic field.

Pr magnetism and its interplay with the Fe spin density wave in PrFeAsO