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/

Zendy Plus

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

Zendy Tools

Zendy Open

Using the Arrott–Noakes equation of state it is shown that the Curie point  TC  and the temperaturewhere the magnetic entropy change is maximum  Tpeak  coincide only in the mean fieldapproximation, but the Heisenberg model implies that Tpeak TC even for homogeneous materials.The distance between Tpeak and TC increases with applied magnetic field following a power law. Inboth cases, TC corresponds to a singular point in the temperature dependence of the magneticentropy change. The field dependence of the magnetic entropy change is exactly the same at theCurie temperature and at the temperature of the peak

The magnetocaloric effect in materials with a second order phase transition: Are TC and Tpeak necessarily coincident?