Room Temperature Ferromagnetic Properties of Ga₁₄N_16−nGd₂C_n Monolayers: A First Principle Study

Round 1

Reviewer 1 Report

- The “strain-induced ferromagnetism”, as from the title, has no context neither in the discussion nor in the conclusions.

- The origin of the particular superiority of Ga14N14Gd2C2 should be explained. What are the limiting amounts of substituting the N atoms with the C atoms? What are the consequences to be expected?

Author Response

AUTHORS’ REPLY: 1) We thank the reviewer for this valuable suggestion. The title has been revised as “Room temperature ferromagnetism properties of 〖" Ga" 〗_"14" "N" _"16-n" 〖"Gd" 〗_"2" "C" _"n"  monolayers: A first principle study”.

 

AUTHORS’ REPLY: 2) We sincerely thank the reviewer for carefully reading the manuscript. We performed a detailed analysis of the C-atom doping sites in the Supporting material and found that the highest Curie temperature was obtained: the replacement of N atoms by the corresponding proportion of C atoms at the [M] [M, 8] and [M, 5, 7] sites. And when the doping concentration reaches 12.5% (4C atoms), the structural stability decreases by 16.49%, thus the subject of our study is 1-3C substituting N atoms.

Author Response File: Author Response.pdf

Reviewer 2 Report

Crystals-2272896-peer-review-v1-1

Comments to the Editor

 Manuscript number Crystals-2272896-peer-review-v1-1 with the title “Strain induced ferromagnetism properties of GaN:Gd monolayers doped with C atom: A first principle study” presents the electronic and magnetic properties of Ga₁₄N_16-nGd₂Cn monolayers, investigated through the means of the first principle calculation. The total magnetic moment of Ga₁₄N₁₆Gd₂ monolayer is 14μB with an antiferromagnetic (AFM) phase. The stable FM phase is due to the pd coupling orbitals between C-2p and Gd-5d states. The Curie temperature close to room temperature is observed in Ga₁₄N₁₄Gd₂C₂ monolayer, and the highest value can reach 261.46 K. The strain effect has a positive effect on the TC of Ga₁₄N_16-nGd₂C_n monolayer, which is much higher than the TR, and the highest value is 525.50 K. This provides an opportunity to further explore the application of two-dimensional magnetic materials in spintronic devices.  The result is useful for the spin electron device.

 

Here are some questions and advices for the authors:

- The TC maxim value of the Ga14N14Gd2C2 monolayers should be checked.

-The quality of the figures 4-7 can be improved. 

-There are some typing errors.

 

If the manuscript would have some Minor revision before publishing, it will be interesting for the readers of the Crystals.

Author Response

AUTHORS’ REPLY: 1) We thank the reviewer for the valuable suggestion, but there is a misunderstanding: the maximum temperature about Ga₁₄N₁₄Gd₂C₂ monolayers has been studied and placed in the Table S1 of Supporting material with a value of 261.46 K.

AUTHORS’ REPLY: 2) Thank you very much for bringing us such an interesting discussion, we have replaced the manuscript with higher quality images.

AUTHORS’ REPLY: 3) We thank the reviewer for this valuable suggestion. The typing errors in the manuscript have been corrected and corrections in the text have been highlighted in red.

Author Response File: Author Response.pdf