YBa₂Cu₃O_y liquid-phase epitaxy films of a orientation grown under ultra-low supersaturation caused by a homogeneous nucleation catastrophe

Following a homogeneous nucleation catastrophe from an unstable Y-Ba-Cu-O solution, ultra-low supersaturation was realized, which was successfully applied to grow pure a-axis YBa₂Cu₃O_y liquid-phase epitaxy films on (110) NdGaO₃ substrates.