Effect of electron irradiation on the optical properties of SrTiO3: An experimental and theoretical investigations

Vikash Mishra, Aanchal Sati, M. Kamal Warshi, Ambadas B. Phatangare, Sanjay Dhole, V. N. Bhoraskar, Harnath Ghosh, Archna Sagdeo, Vinayak Mishra, Rajesh Kumar, P. R. Sagdeo

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Diffuse reflectance spectroscopy (DRS) measurement has been carried out on pure and electron irradiated single crystal samples of SrTiO3. Interestingly, it has been observed that electron-irradiated sample have new absorption peak in optical absorption spectra. In order to understand the origin of a new absorption peak in electron irradiated sample, first principle calculation for optical spectra considering defects at Sr, Ti and O site using GGA + approximation have been carried out. It has been observed that the features present in the experimental optical absorption spectra match with that of simulated one having oxygen vacancy. Present investigation suggests that high energy electron irradiation produces oxygen defects in SrTiO3 and DRS is found to be a useful technique to probe the signature of such defects experimentally.

Original languageEnglish
Article number036210
JournalMaterials Research Express
Volume5
Issue number3
DOIs
Publication statusPublished - 03-2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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