Theoretical Temperature–Pressure Phase Diagram for {N(CH₃)₄}₂CuBr₄

The influence of uniaxial stress on the electrical properties of TMA‐CuBr4 crystals

“…The fact that the polar phase is unstable with respect to small σ zz stresses indicates that the crystal occurs in a state close to a triple critical point on the σ zz -T diagram, at which the lines of three phases intersect [2]. The theoretical description of a temperature-pressure diagram for TMA-CuBr 4 is made in [5].…”