i sysntesized sample by Ball milling and then heated it at 700 C, i got the pure phase with low intensities about 10K, then after annealing at 1000C, i got the intensities peaks about 100K-500K, what does it mean?
In general, crystalline nature of the material will increase with increase in intensity of XRD patterns. And it is well known that with calcination or annealing, high crystalline materials are prepared.