Initial Morphology and Grain Growth in Donor‐Doped Barium Titanate

The influence of the initial grain morphology on the anomalous grain growth in donor‐doped barium titanate has been studied. The results show that powders with aspherically shaped grains exhibit a much lower critical donor‐dopant concentration, inhibiting anomalous grain growth during sintering, than powders with equisized spherically shaped grains and a similar, or even a lower, initial specific surface area.