They also showed that crushing a sample prior to XRD data acquisition increase the monoclinic content by more than 10 𝑣𝑜𝑙%. Hence, in this study, a lower cooling rate was applied to minimize the above-mentioned effect. It was noticeable that XRD data showed a reciprocal however small relationship of intensity of (111) peak with increase in sintering temperature for samples sintered at 1000 °𝐶, 1100 °𝐶, and 1200 °𝐶. This change can be attributed to possible convolution of intensity of the (111) peak reflected from all three phases of cubic, tetragonal, and monoclinic at 2𝜃(°) equal to 30°, 29.8°, and 31°, respectively.