Data for: Growth-microstructure relationship in MgO-MgAl2O4 eutectic fabricated by micro-pulling down method with MgAl2O4 seed crystals

Numerical results of the image analysis. Perpendicular cross-sections of directionally solidified MgO-MgAl2O4 eutectic were cut perpendicular to the growth direction and polished. Images, in the form of scannning electron microscopy micrographs were processed using ImageJ 1.52g.图像分析的数值结果：对定向凝固制备的MgO-MgAl₂O₄共晶材料，沿垂直于其生长方向的方位截取垂直截面并进行抛光处理；以扫描电子显微照片形式获取的样品图像，采用ImageJ 1.52g软件完成了图像处理。