Pulsed laser synthesis of diamond-type nanoparticles with enhanced Si–C solid solubility and special defects

On the 2H- to 3C-Type Transformation and Growth Mechanism of SiC Nanowires upon Carbothermal Reduction of Rice Straws

“…Therefore, both the small number of atoms in anchorage at the interface and a lower T 0 could make the nanoparticle have a higher diffusivity during the Brownian-type rotation. The anchorage release for SiC 39 As a result, both the phase and the chemical constitution of the Si-C system would dominate the surface energy and the energetically favored special boundaries via the (hkl)-specific coalescence.…”

“…The ( hkl )-specific coalescence of 2H- and 3C-type NPs condensed directly from vapor without FeSi catalysis in Figure a with the crystallographic relationship (0001) 2H //{112} 3C ; ⟨1̅010⟩ 2H //⟨1̅1̅1⟩ 3C is relevant to the special boundaries induced by the coalescence of the diamond-type NPs . The diamond-type particles, i.e., C-overdoped Si, 3C–Si 1+ x C, and Si-overdoped C, formed sintered polycrystals and individual particles with well-developed ∼{111} and ∼{110} vicinal surfaces for ( hkl )-specific coalescence to form a {111} twin boundary, (110) 70.5° twist boundary, and [111̅](123)/(011) tilt boundary . As a result, both the phase and the chemical constitution of the Si-C system would dominate the surface energy and the energetically favored special boundaries via the ( hkl )-specific coalescence.…”