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Crystals
Volume 11
Issue 7
10.3390/cryst11070780
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Article
Peer-Review Record

Photoconduction of Polar and Nonpolar Cuts of Undoped Sr0.61Ba0.39Nb2O6 Single Crystals

Crystals 2021, 11(7), 780; https://doi.org/10.3390/cryst11070780
by Elke Beyreuther 1,*, Julius Ratzenberger 1, Matthias Roeper 1, Benjamin Kirbus 1, Michael Rüsing 1, Liudmila I. Ivleva 2 and Lukas M. Eng 1,3
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Crystals 2021, 11(7), 780; https://doi.org/10.3390/cryst11070780
Submission received: 24 May 2021 / Revised: 28 June 2021 / Accepted: 1 July 2021 / Published: 3 July 2021
(This article belongs to the Special Issue Electrocrystallization of Metallic Alloys and Composites)

Round 1

Reviewer 1 Report

Manuscript number: crystals-1252971-peer-review-v1

Title: Photoconductivity in Polar and Nonpolar Cuts of Undoped Sr0.61Ba0.39Nb2O6 Single Crystals

 

In the present work, the authors have studied the photoconductive responses of strontium barium niobate in the composition Sr0.61Ba0.39Nb2O6 (SBN61). They have systematically varied illumination conditions along either the polar z-axis or perpendicular to it (x-cut).  The work seems interesting and sound and this will be of interest to readers and the scientific community; hence, it is recommended for publication in the Journal of Crystals after incorporating few minor suggestions.

  1. In this article pure, i.e., undoped, SBN crystal was grown by the modified Stepanov technique. However, there is no evidence provided. The author must present XRD or TEM characterization results to support the claim.
  2. In section 2.1, the authors stated that “The completeness of the chemical reaction was confirmed by X-ray phase analyses”. But no results for the same are found in the article. Authors should show the evidence.
  3. For better understanding, the authors should show the schematic of the single crystal along with x-cut and z-cut, and their device structure.
  4. What is the possible mechanism for the alteration of the band gap with x-cut and z-cut on the crystal?
  5. 5: Authors should calculate the relative percentage of recovery after removing the light exposure w.r.t. baseline. Authors must refer to the earlier published article for the calculation:   https://doi.org/10.1016/j.ceramint.2019.01.174.

The wavelength-dependent percentage of recovery should be calculated for x-cut and z-cut and explain.

Accept with minor revision

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments in attachment.

Comments for author File: Comments.docx

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

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