Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics

The energy storage properties of ( 1 − x ) Bi 0 . 5 Na 0 . 5 TiO3– x BaTiO3( 0 ≤ x ≤ 0 . 0 8 ) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field ( P – E ) loops at various temperatures. The energy storage densities are observed to increase with...

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Bibliographic Details
Published inJournal of advanced dielectrics Vol. 10; no. 3; pp. 2050009 - 2050009-7
Main Authors Uddin, Sarir, Zheng, Guang-Ping, Khan, Asif, Khan, Muhammad Riaz, Khan, Banaras
Format Journal Article
LanguageEnglish
Published Singapore World Scientific Publishing Company 01.06.2020
World Scientific Publishing Co. Pte., Ltd
World Scientific Publishing
Subjects
Antiferroelectricity
antiferroelectrics
Electric fields
Energy storage
Ferroelectric materials
Lead free
perovskites
Polarization
relaxor
Relaxors
Room temperature
Sol-gel processes
Temperature
Temperature dependence
perovskites
antiferroelectrics
relaxor
energy storage
Lead-free
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Summary:The energy storage properties of ( 1 − x ) Bi 0 . 5 Na 0 . 5 TiO3– x BaTiO3( 0 ≤ x ≤ 0 . 0 8 ) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field ( P – E ) loops at various temperatures. The energy storage densities are observed to increase with increase in temperature and this may be attributed to the presence of antiferroelectric (AFE) phase at higher temperature ( ≥ 1 2 0 ∘ C). Obvious changes are observed in the saturation polarization ( P s ) and remnant polarization ( P r ) with increasing temperature. The maximum energy storage density of 0.6 J/cm3 is observed for x = 0 . 0 6 in the AFE phase at 150∘C for 90 kV/cm of applied electric field. BNT–BT can be a promising candidate for energy storage devices to be used in above-room-temperature environment.
ISSN:2010-135X
2010-1368
DOI:10.1142/S2010135X20500095