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Physical Review B
Tris-sarcosine calcium chloride [(TSCC), (CH 3 NHCH 2 COOH) 3 CaCl 2 ] is a uniaxial ferroelectric (FE) with a displacive second-order phase transition near T c = 130 K. A continuous range of solid solutions can be made by substituting Br for Cl, which lowers T c to 0 K at ∼72% Br. Such a quantum critical point differs from that in pseudocubic FEs, such as O-18 SrTiO 3 or doped KTaO 3 . For many years, this system was thought to have only two phases, paraelectric and FE, at ambient pressure.doi:10.1103/physrevb.83.094102 fatcat:dknfl3yhorffdcwnwg45ecdbqq