Phase-controlled growth of 2D crystals of the MB₂T₄ family via a flux-assisted method.

ABSTRACT: Van der Waals materials of the MB₂T₄ family (M = transition metal or rare-earth metal, B = Bi or Sb, T = Te, Se, or S) have attracted wide interest for their exotic topological and magnetic properties, as well as potential spintronic applications. However, the direct growth of 2D ternary MB₂T₄ remains challenging due to multiple competing phases and complex atomic arrangements. Here, we report a flux-assisted, phase-controlled growth strategy to directly grow six distinct 2D MB₂T₄ crystals. Using MB₂T₄ bulk powder as precursor, its dissolution into the cosolvent ensures stoichiometric control, while thermodynamic-kinetic equilibrium suppresses phase separation. Taking MnSb₂Te₄ as a

SUBMITTER: Wang X 

PROVIDER: S-EPMC12913725 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature