AaRt1la9YIksooY%B4ta6B.B82.1#.15B.J4B.DB.BB.40uJ 2 0 curves (a) and rocking curves (b) in the vicinity of (220) reflection for MgO(110) single crystals. To adjust position of uJ and 2 0 axes accurately in our experiment, we fix one of these two axes and scan the other one repeatedly until the maximum of diffraction intensity appears. We do not change the zero point of uJ and 2 0 axes of goniometer during measurement and therefore, the ratio of 2 0/ uJ is not str
