Novel Terahertz Properties of Nanostructured Mn3+0.53Sn Films with Different Crystalline Orientations Driven by Ostwald Ripening on (0001) c-Al2O3
, Ying Liu 4, Jing Wang 5 and Hai Wang 1,*
Round 1
Reviewer 1 Report
Journal: Coatings
Title: Novel terahertz properties of nanostructured Mn3+0.53Sn films with different crystalline orientation driven by Ostwald Ripening on (0001) c-Al2O3
The authors of the afore mentioned study have done well detailed research on the structural, morphological, and terahertz properties etc., of the nanostructured Mn3+0.53Sn films. They have used several equipment and analysis such as XRD, SEM, HRTEM-SAED and AFM as well as home-built THz time-domain spectroscopy (THz-TDS) analyzer to characterize samples. They have done good effort to express the obtained results. Their study is original, and it has interesting results. However, the authors need to express what are new, novel and different from the current literacy. Furthermore, to improve the present study according to issues given below are required. Moreover, it will be good advantage to state the aim of the presented investigation. The origin of the observed all results need to be expressed and discussed in more detail and it should be clarified by more supportive experiments and refs. Therefore, after doing the issues and suggestions accordingly as given below, this study can be recommended for possible publication in Coatings.
1-The introduction needs to be enlarged in terms of the used preparation techniques’ advantage over the other conventional film preparation techniques as well as the physical and chemical characteristics of Mn3+0.53Sn films with its advantage. Compared to the other similar materials why Mn3+0.53Sn has been selected? For that, it is suggested to use the following, recommended to mention them within the text. (i) Electrochimica Acta, 184, 2015, 387-391; (ii) Journal of Alloys and Compounds, 158734, 2021; (iii) T S Seifert et al 2018 J. Phys. D: Appl. Phys. 51 364003.
2-The EDX and XPS are needed to determine the existed elemental ratios of used atoms initially. Determine the valance state of each element and commend their effects on the investigated characteristics in more detail.
3-It will be a good advantage to add the graphical abstract and research highlights.
4-The crystallite size, micro-strain, and dislocation density as well as the lattice parameters of the films need to be calculated and tabulated. Compare the observed grain size and crystallite size effects of the grain size. Further thermal extinction coefficient between the layers of Mn3+0.53Sn and (0001) c-Al2O3 cannot be ignored. Moreover, the effects of these parameters need to be investigated in more detail on the presented characteristics of the Mn3+0.53Sn films. Furthermore, for more commends and discussions it is suggested to use the following, suggested to mention them within the text; (i) Ultrasonics, Volume 108, 2020, 106202, (ii) Optical Materials 127, 112270, 2022 (iii) EEE Trans. Terahertz Sci. Technol., 7 (2017), pp. 93-97; (iv) Journal of alloys and compounds 465 (1-2), 20-23, 2008 (v) Journal of Infrared, Millimeter, and Terahertz Waves et al 2018 Mater. Res. Express 5 066408; (viii) Physical Review B 77, 195405 (2008); (ix) Materials Chemistry and Physics 258, 123997, 2021.
5-It will be a good advantage to add the M-H and M-T curves to the ferromagnetic characteristics and Curie temperature of the Mn3+0.53Sn films.
Author Response
Please see the attachment
Author Response File: 
Author Response.docx
Reviewer 2 Report
The manuscript titled," Novel terahertz properties of nanostructured Mn3+0.53Sn films with different crystalline orientation driven by Ostwald Ripening on (0001) c-Al2O3" is quiet interesting and will cater the need of scientific. The authors are advised to cross check the manuscript thoroughly to remove any ambiguity in form of grammatical mistakes, spelling correction etc. before its final publication.
Author Response
Please see the attachment
Author Response File: Author Response.docx
Reviewer 3 Report
This is a nice study on an important growth technique in Mn3Sn and tesing its Thz properties to ensure topological properties are sustained. The introduction can be slightly improved in the light of recent works where ThZ signals have been used to manipulate the magnetic order parameter in Mn3X, with a theoretical extension.
1. Nature Physics volume 16, pages 937–941 (2020)
2. Nature Materials volume 20, pages 1364–1370 (2021)
3. arXiv:2202.06882
The link between the octupole magnetic order parameter is not well highlighted. In particular the compounds have a clock arrangement of ground states which can be manipulated to produce different Hall responses. A detailed discussion is present in
1. arXiv:2206.00793
2. arXiv:2206.02219
The experiment data seems sound and the known phase transitions of the magnetic order are observed. Note that the Hall vector lies in the kagome plane which explains the difference between the ThZ transmissions for the two configurations. This is explained in ther references I list above which should be discussed.
Author Response
Please see the attachment
Author Response File: Author Response.docx
Round 2
Reviewer 1 Report
The authors of the revised text have very well revisions with highly appreciable, enough, and convincing. However, the authors have missed some refs as they discussed in issue 4 (Q4). After doing it, So, I have recommended the acceptance of the revised text.
Author Response
Please see the attachment
Author Response File: 
Author Response.pdf
