Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/37414
Title: Nanoindentation and structural studies of MgO-doped congruent LiNbO3 single crystals
Author: Rahman, M.K. Raseel
Riscob, B.
Singh, Budhendra
Bhatt, R.
Bhaumik, Indranil
Ganesamoorthy, S.
Vijayan, N.
Karnal, A.K.
Bdikin, Igor
Nair, Lekha
Keywords: MgO-Doped lithium niobate
Williamson-Hall relation
Raman analysis
Nanoindentation
Issue Date: 1-May-2021
Publisher: Elsevier
Abstract: The mechanical properties of undoped and 2.0, 4.0 and 6.0 mol% Mg-doped LN single crystals, grown by the Czochralski technique, have been investigated using nanoindentation studies to understand the mechanical deformation behaviour as doping is increased. This has been correlated with structural investigations by powder XRD analysis and Raman spectroscopy. Powder X-ray diffraction measurements show a slight increase in the lattice parameters as the Mg content is increased in the crystal. The lattice strain developed due to the doping has been calculated by the Williamson-Hall relation. The influence of Mg incorporation on lattice vibrations was analysed using Raman spectroscopy, which indicated no shift in the peak positions with doping, and only slight variation in the intensity and width of the peaks. The grown crystals were subjected to nanoindentation and the Young's modulus and hardness values were obtained by using the Oliver-Pharr method. The results reveal the optimal doping levels of Mg which result in enhanced mechanical strength of lithium niobate single crystals.
Peer review: yes
URI: http://hdl.handle.net/10773/37414
DOI: 10.1016/j.matchemphys.2021.124425
ISSN: 0254-0584
Appears in Collections:TEMA - Artigos
DEM - Artigos

Files in This Item:
File Description SizeFormat 
Nanoindentation and structural studies of MgO-doped congruent.pdf2.44 MBAdobe PDFView/Open


FacebookTwitterLinkedIn
Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.