Erratum to “Crystal structure and zinc location in the BaZnFe6O11 Y-type hexagonal ferrite” by Collomb et al. [J. Magn. Magn. Mater. 78(1) (1989) 77–84]

Abstract

In the paper ‘‘Crystal structure and zinc location in the BaZnFe6O11 Y-type hexagonal ferrite’’ by Collomb et al. [1], the detailed list of atomic positions gives the fractional coordinate location of the Me5 atom at the 18h symmetry site as x: 0.50317, y: –0.50317, and z: 0.19073 in a hexagonal cell. We believe this to be a typographical error, and that the fractional coordinate for the z-position should be approximately z: 0.109. The Y-type hexagonal ferrite has the space group symmetry R-3m. When this symmetry is applied to the positions given in the paper, using CrystalMaker software, the center to center distance between the Me5 atoms and the O5 atoms is only 0.27 A, an unrealistic number. In the paper, the closest-approach distance between Me5 and O5 atoms is listed as 2.048 A. Since the R-3m symmetry of the system is well-documented, the issue must lie with either the oxygen or metal atom fractional coordinate. Since the oxygen positions are consistent with the placement of the other oxygen layers in the unit cell, the misalignment appears to be in the Me5 position. Another paper on Y-type