Figure 4
Left side: example of the loss of intensity of the zircon 002 peak, located at about 27° 2θ, if grinding time is increased using an agate mortar. Note that the corundum 012 peak, located at about 25.5° 2θ, exhibits approximately the same intensity. Right side: zincite 101 peak broadening effect in a synthetic mixture ground with an agate mortar. In both graphs, continuous, dotted and dashed lines represent the diffraction pattern after 2, 12 and 22 min, respectively. |