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

doi:10.1088/2053-1591/aab6f5

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 journal › Article › peer-review

37 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 language	English
Article number	036210
Journal	Materials Research Express
Volume	5
Issue number	3
DOIs	https://doi.org/10.1088/2053-1591/aab6f5
Publication status	Published - 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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10.1088/2053-1591/aab6f5

Cite this

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title = "Effect of electron irradiation on the optical properties of SrTiO3: An experimental and theoretical investigations",

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.",

author = "Vikash Mishra and Aanchal Sati and Warshi, \{M. Kamal\} and Phatangare, \{Ambadas B.\} and Sanjay Dhole and Bhoraskar, \{V. N.\} and Harnath Ghosh and Archna Sagdeo and Vinayak Mishra and Rajesh Kumar and Sagdeo, \{P. R.\}",

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doi = "10.1088/2053-1591/aab6f5",

language = "English",

volume = "5",

journal = "Materials Research Express",

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TY - JOUR

T1 - Effect of electron irradiation on the optical properties of SrTiO3

T2 - An experimental and theoretical investigations

AU - Mishra, Vikash

AU - Sati, Aanchal

AU - Warshi, M. Kamal

AU - Phatangare, Ambadas B.

AU - Dhole, Sanjay

AU - Bhoraskar, V. N.

AU - Ghosh, Harnath

AU - Sagdeo, Archna

AU - Mishra, Vinayak

AU - Kumar, Rajesh

AU - Sagdeo, P. R.

PY - 2018/3

Y1 - 2018/3

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85045614136

UR - https://www.scopus.com/pages/publications/85045614136#tab=citedBy

U2 - 10.1088/2053-1591/aab6f5

DO - 10.1088/2053-1591/aab6f5

M3 - Article

AN - SCOPUS:85045614136

SN - 2053-1591

VL - 5

JO - Materials Research Express

JF - Materials Research Express

IS - 3

M1 - 036210

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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