Abstract Materials with colossal permittivity (CP) have attracted wide interest and have tremendous potential application in super-capacitors [1] . Many materials with the colossal permittivity have been fabricated, such as Cu3Ti4O12 [2] , [3] , [4] , [5] , [6] , TiO2 [7] , [8] , [9] , [10] , BaTiO3 [11] , and SrTiO3 [12] , [13] , [14] , [15] , etc. However, the exact physical mechanisms and explanations for generating CP are still unclear. In our previous publication “Point defect structure of La-doped SrTiO3 ceramics with colossal permittivity” [16] , we investigated point defects in pure SrTiO3 and La-doped SrTiO3, and reported that the origin of CP in La-doped SrTiO3 ceramics is related to a sharp polarization increase resulting from defects dipole structure. Recently, A. Tkach et al. commented on the publication and put forward some different viewpoints. In this letter, we would like to discuss the related issues and reply to the comments.

中文翻译：

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对“大介电常数La掺杂SrTiO3陶瓷的点缺陷结构”评论的回应

摘要 具有巨大介电常数（CP）的材料引起了广泛的兴趣，在超级电容器中具有巨大的应用潜力[1]。已经制造了许多具有巨大介电常数的材料，例如 Cu3Ti4O12 [2] , [3] , [4] , [5] , [6] , TiO2 [7] , [8] , [9] , [10] , BaTiO3 [11] 和 SrTiO3 [12]、[13]、[14]、[15] 等。然而，产生 CP 的确切物理机制和解释仍不清楚。在我们之前的出版物“具有巨大介电常数的 La 掺杂 SrTiO3 陶瓷的点缺陷结构”[16] 中，我们研究了纯 SrTiO3 和 La 掺杂 SrTiO3 的点缺陷，并报道了 La 掺杂 SrTiO3 陶瓷中 CP 的起源与由于缺陷偶极子结构导致极化急剧增加。最近，A. Tkach 等人。发表评论并提出一些不同的观点。在这封信中，我们想讨论相关问题并回复评论。