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Title: Stress induced enhanced polarization in multilayer BiFeO{sub 3}/BaTiO{sub 3} structure with improved energy storage properties

Abstract

Present work reports the fabrication of a multilayer (5-layer) structure of BiFeO{sub 3}(BFO)/BaTiO{sub 3}(BTO) using spin-coating technique. The crystallographic structure, surface morphology and ferroelectric behavior of multilayer structure in metal-ferroelectric-metal capacitor have been studied. Le-Bail refinement of X-ray diffraction data revealed the formation of polycrystalline pure perovskite phase with induced stress. The values of remnant (P{sub r}) and saturation polarization (P{sub s}) for BFO/BTO multilayer structure are found to be 38.14 μC/cm{sup 2} and 71.54 μC/cm{sup 2} respectively, which are much higher than the corresponding values reported for bare BFO thin film. A large value of dielectric constant of 187 has been obtained for multilayer structure with a low leakage current density of 1.09 × 10{sup −7} A/cm{sup 2} at applied bias of 10 V. The BFO/BTO multilayer structure favors the enhanced energy storage capacity as compared to bare BFO thin film with improved values of energy-density and charge-discharge efficiency as 121 mJ/cm{sup 3} and 59% respectively, suggesting futuristic energy storage applications.

Authors:
 [1];  [2];  [3];  [4];  [1]
  1. Department of Physics and Astrophysics, University of Delhi, Delhi (India)
  2. Physics Department, Miranda House, University of Delhi, Delhi (India)
  3. CSIR-National Physical Laboratory, Dr. K.S .Krishnan Marg, Delhi (India)
  4. Department of Applied Physics, Delhi Technological University, Delhi (India)
Publication Date:
OSTI Identifier:
22492154
Resource Type:
Journal Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; CRYSTAL STRUCTURE; ENERGY DENSITY; ENERGY STORAGE; FABRICATION; FERRITES; FERROELECTRIC MATERIALS; LAYERS; LEAKAGE CURRENT; MORPHOLOGY; PERMITTIVITY; POLARIZATION; POLYCRYSTALS; SPIN-ON COATING; STRESSES; SURFACES; THIN FILMS; TITANATES; X-RAY DIFFRACTION

Citation Formats

Sharma, Savita, Department of Applied Physics, Delhi Technological University, Delhi, Tomar, Monika, Kumar, Ashok, Puri, Nitin K., and Gupta, Vinay. Stress induced enhanced polarization in multilayer BiFeO{sub 3}/BaTiO{sub 3} structure with improved energy storage properties. United States: N. p., 2015. Web. doi:10.1063/1.4934578.
Sharma, Savita, Department of Applied Physics, Delhi Technological University, Delhi, Tomar, Monika, Kumar, Ashok, Puri, Nitin K., & Gupta, Vinay. Stress induced enhanced polarization in multilayer BiFeO{sub 3}/BaTiO{sub 3} structure with improved energy storage properties. United States. https://doi.org/10.1063/1.4934578
Sharma, Savita, Department of Applied Physics, Delhi Technological University, Delhi, Tomar, Monika, Kumar, Ashok, Puri, Nitin K., and Gupta, Vinay. 2015. "Stress induced enhanced polarization in multilayer BiFeO{sub 3}/BaTiO{sub 3} structure with improved energy storage properties". United States. https://doi.org/10.1063/1.4934578.
@article{osti_22492154,
title = {Stress induced enhanced polarization in multilayer BiFeO{sub 3}/BaTiO{sub 3} structure with improved energy storage properties},
author = {Sharma, Savita and Department of Applied Physics, Delhi Technological University, Delhi and Tomar, Monika and Kumar, Ashok and Puri, Nitin K. and Gupta, Vinay},
abstractNote = {Present work reports the fabrication of a multilayer (5-layer) structure of BiFeO{sub 3}(BFO)/BaTiO{sub 3}(BTO) using spin-coating technique. The crystallographic structure, surface morphology and ferroelectric behavior of multilayer structure in metal-ferroelectric-metal capacitor have been studied. Le-Bail refinement of X-ray diffraction data revealed the formation of polycrystalline pure perovskite phase with induced stress. The values of remnant (P{sub r}) and saturation polarization (P{sub s}) for BFO/BTO multilayer structure are found to be 38.14 μC/cm{sup 2} and 71.54 μC/cm{sup 2} respectively, which are much higher than the corresponding values reported for bare BFO thin film. A large value of dielectric constant of 187 has been obtained for multilayer structure with a low leakage current density of 1.09 × 10{sup −7} A/cm{sup 2} at applied bias of 10 V. The BFO/BTO multilayer structure favors the enhanced energy storage capacity as compared to bare BFO thin film with improved values of energy-density and charge-discharge efficiency as 121 mJ/cm{sup 3} and 59% respectively, suggesting futuristic energy storage applications.},
doi = {10.1063/1.4934578},
url = {https://www.osti.gov/biblio/22492154}, journal = {AIP Advances},
issn = {2158-3226},
number = 10,
volume = 5,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 2015},
month = {Thu Oct 15 00:00:00 EDT 2015}
}