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

Instability criteria for tricritical systems of binary alloys with ordering and phase separation are derived from linearized coupled kinetic equations for local composition and local degree of order. The analysis clearly shows that deviation from stoichiometry leads to instability against heterogeneous ordering associated with compositional fluctuations, when the degree of order is around1  /    3$ 1/\sqrt 3 $    of the equilibrium value. Heterogeneous ordering or spinodal decomposition is expected to occur even in the single phase field of the order phase as well as within the miscibility gap between ordered and disordered phases. Transmission electron microscopy on an Fe-14.6 at.% Si alloy revealed that D0 3 -type ordering is accompanied by heterogeneous fluctuations of the degree of order as predicted by the derived instability criteria.

Linear Instability Criteria for Ordering and Phase Separation in Tricritical Systems