AB’1/3B’’2/3O3 複合鈣鈦礦微波介電材料之品質因子，與 B-site 陽離子有序程度有很大的關聯性。Ba(Mg(1-x)/3Cox/3Nb2/3)O3 材料在 x = 0.05 有最高品質因子，一般認為有序化與熱處理條件有關，但動力學模式較少被研究。本研究以高溫熱處理及淬冷，進行等溫試驗，探討 Ba(Mg(1-x)/3Cox/3Nb2/3)O3 少量取代 (x = 0.01-0.1) 之 1:2 有序化行為。
x = 0.01-0.1 各成分點之有序-無序相轉換溫度以下，1300℃-1600℃ 之溫度區間，隨著熱處理溫度提升及持溫時間的延長，有序程度也隨之上升。由成核成長動力學分析，x = 0.01-0.07 之有序化行為由 diffusion controlled，而 x = 0.1 之有序化行為則為 phase-boundary controlled，在成核成長初期已達到成核飽和，x = 0.01-0.05 隨著 Co2+ 添加量增加，成長速率增加且有序-無序相轉換之活化能有減小的趨勢，在 x = 0.05 有序成長速率達到最大值。研究中也指出隨著Co2+ 添加量增加，domain density 有增加的趨勢，Co2+ 添加量較多有較高的 domain density，可能為 x = 0.07-0.1 序化速率常數下降的原因。

It is believed that there is a connection between quality factor and ordering degree of B-site cation in A(B’1/3B’’2/3)O3. In this research, ordering behavior of Ba(Mg(1-x)/3Cox/3Nb2/3)O3 (x = 0.01-0.1) was studied by annealing and quench at high temperature.
In this studied, ordering degree of Ba(Mg(1-x)/3Cox/3Nb2/3)O3 (x = 0.01-0.1) is increased with increasing temperature and annealing time. The result of kinetic KJMA analysis suggests the order-disorder transformation is diffusion controlled at x = 0.01-0.07 and phase boundary controlled at x = 0.1. The activation energy for order-disorder transformation is reduced and the rate constant of ordering is increased with increasing Co2+ substitution. The max rate constant of ordering is at x = 0.05. The domain density is increased with increasing Co2+ substitution. The higher domain density may be the reason that the rate constant of ordering decreased at x = 0.07-0.1.

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