Effect of radiation-induced vacancy saturation on the first-order phase transformation in nanoparticles: insights from a model

• Aram Shirinyan and
• Yuriy Bilogorodskyy

Beilstein J. Nanotechnol. 2024, 15, 1453–1472, doi:10.3762/bjnano.15.117

• materials. Keywords: α-phase; β-phase; chemical rate theory; Fe; nanoparticle; nucleation; phase stability diagram; polymorphic phase transision; radiation stability; thermodynamics; vacancy saturation; Introduction Solid metal or ceramic nanoparticles with a diameter in the range of 1–100 nm, when placed

• %. Generalization of nucleation energy and phase transformation criteria The results can be generalized for different particle sizes, allowing for the creation of a size- and temperature-dependent diagram depicting the stability of the α phase. This diagram, referred to as the temperature–size α-phase stability

• diagram (Figure 5), illustrates three main areas (or four subareas) representing the transformation of α-phase nanoparticles under irradiation. Area I – unstable α-phase particle. In this region, the phase transformation from the α-phase to another phase can occur, regardless of whether the material is