Phase Formation and Properties of Multicomponent Solid Solutions Based on Ba(Ti, Zr)O3 and AgNbO3 for Environmentally Friendly High-Efficiency Energy Storage
, Ekaterina V. Glazunova 2, Lydia A. Shilkina 2, Aleksandr V. Nazarenko 3, Aleksey A. Pavelko 2, Vyacheslav A. Bobylev 2, Larisa A. Reznichenko 2 and Ilya A. Verbenko 2
Eugene V Colla
Round 1
Reviewer 1 Report
It is an interesting manuscript dealing with new lead-free ferroelectric materials. Manuscript contains a lot of results, and I would recommend it for publication after some minor revision.
Most my comment are related to the presentation of the data:
1. Line 106: “The value of the stored energy W, the recovery energy Wrec and the efficiency of h were calculated using formulas (1-3)”. I think equations (4-6). Also need to give comments what difference is between Wrec and W and what are the Pmax and Pr. Better to illustrate this on the hysteresis loop.
2. Fig.2. What data points are related to left axis and what to right; most symbols for data points are the open squares; what does it mean that bottom line doubles at x=0.06? Make more clear comments in figure caption.
3. Fig.5-8. Would be better to merge left side and right-side graphs for e' and e’’.
Quality of English is not absolutely perfect but acceptable - it is clear what it is about.
Author Response
Response to Reviewer.
Dear reviewer, thank you for your time.
Point 1: Line 106: “The value of the stored energy W, the recovery energy Wrec and the efficiency of h were calculated using formulas (1-3)”. I think equations (4-6). Also need to give comments what difference is between Wrec and W and what are the Pmax and Pr. Better to illustrate this on the hysteresis loop.
Response 1: We agree with the first remark, made appropriate corrections in lines 106-110
Point 2: Fig.2. What data points are related to left axis and what to right; most symbols for data points are the open squares; what does it mean that bottom line doubles at x=0.06? Make more clear comments in figure caption.
Response 2: We agree with the second remark, made appropriate corrections in lines 132-134 and in Figure 2.
Point 3: Fig.5-8. Would be better to merge left side and right-side graphs for e' and e’’.
Response 3: Unfortunately, we cannot combine measurements taken at low and high temperatures, since different equipment was used for these measurements.
Reviewer 2 Report
This work investigates the effects of AgNbO3 modification on the structure and energy storage properties of Ba(Ti, Zr)O3 solid solution. Overall, this work is clearly presented. Before acceptance, I have the following comments:
1) Usually AgNbO3 needs to be sintered at an oxygen-rich atmosphere to synthesis a pure perovskite structure. The authors need to give some comments to this aspect.
2) LiNbO3 is not antiferroelectric material!!! The conclusion needs to be revised.
English needs to be further polished.
Author Response
Response to Reviewer
Dear reviewer, thank you for your time.
Point 1: Usually AgNbO3 needs to be sintered at an oxygen-rich atmosphere to synthesis a pure perovskite structure. The authors need to give some comments to this aspect.
Response 1: We agree with your remark, the corresponding changes have been made to lines 58, 61, 63. We synthesized AgNbO3 in the air. To check the purity, we used only X-ray phase analysis, which showed the absence of impurity phases other than perovskite. When selecting the ways of AgNbO3 synthesis, we relied on the results of doi: 10.1134/S0020168511080061, where a two-stage synthesis and an air atmosphere were used to obtain ceramic AgNbO3.
Point 2: LiNbO3 is not antiferroelectric material!!! The conclusion needs to be revised.
Response 2: We agree with the second remark, made appropriate corrections in line 242
Round 2
Reviewer 2 Report
The revised version is OK for publication.
