Structurally ferroelectric SrMgF4. Erratum
AbstractIn the paper by Abrahams (2002) Acta Cryst. (2002), B58, 34-37 two errors were printed. First, in the abstract the Curie temperature was incorrectly given as 1450 K. The correct value is 450 K. The second error occurs in section (a) of p. 36. The polar displacement expression is currently given as zl 1 A. The correct expression should be zi 1 A.