The main error is related to the way of the lattice parameters evaluation. Authors say that three independent lattice parameters of the orthorhombic unit cell, a, b and c, were calculated from only one diffraction peak, i.e. using one diffraction angle and one equation 1. It is not possible from the mathematical rules (one equation with three unknown values). Thus, the values of lattice parameters presented in Table 1 in the commented paper are totally wrong. One of the Authors (A.R.B.) explained this sensational procedure during personal contact. He used the “standard c/a ratio of orthorhombic crystal structure by approximation with the XRD data. From the estimated c and a values, b values are calculated.” The main problem is that such a standard c/a ratio does not exist for orthorhombic crystals. He wrongly supposed that c/a ratio known for some hexagonal crystals can be used

中文翻译：

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J. Srivind, VS Nagaretthinam, AR Balu [Mater. Sci.-Poland, 34 (2016), 393 – 398]

主要误差与晶格参数评估方式有关。作者说，正交晶胞的三个独立晶格参数 a、b 和 c 仅从一个衍射峰计算，即使用一个衍射角和一个方程 1。从数学规则（一个方程具有三个方程）是不可能的未知值）。因此，评论论文中表 1 中给出的晶格参数值是完全错误的。其中一位作者 (ARB) 在个人接触期间解释了这一耸人听闻的过程。他通过 XRD 数据近似使用了“正交晶体结构的标准 c/a 比率”。根据估计的 c 和 a 值，计算出 b 值。” 主要问题是正交晶体不存在这种标准的 c/a 比。