Dielectric investigation of lead‐free perovskite strontium titanate with 25% bismuth ceramics

6533b85bfe1ef96bd12bb409

RESEARCH PRODUCT

Dielectric investigation of lead‐free perovskite strontium titanate with 25% bismuth ceramics

Sarunas Bagdzevicius Robertas Grigalaitis Juras Banys Andris Sternberg Karlis Bormanis

subject

Condensed matter physics Chemistry Relaxation (NMR)chemistry.chemical_element Activation energy Dielectric Condensed Matter Physics Bismuth Dipole chemistry.chemical_compound Nuclear magnetic resonance Strontium titanate Dispersion (chemistry)Perovskite (structure)

description

In this work lead-free 0.75SrTiO3-0.25BiTiO3 ceramics have been investigated in broad frequency range. Obtained results showed pronounced dispersion below room temperature typical for the dipolar glasses. The calculated relaxation time distribution function broadens toward longest relaxation times part on cooling. The obtained most probable relaxation time diverges according to the Vogel-Fulcher relationship with the following parameters: dipole activation energy EA=2123 K, glassy state temperature T0=52.7 K, shortest relaxation time, referring to dipole relaxations at very high temperatures, τ0=2.1·10–14 s. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

year	journal	country	edition	language
2009-12-01	physica status solidi c

https://doi.org/10.1002/pssc.200982535

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