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Linear impedance of Bi2VO5.5 ceramic prepared by traditional melt quenching technique measured with impedance spectroscopy method at low temperature region
Description
The linear electrical properties of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured by impedance spectroscopy method.
Bi2VO5.5 ceramic was prepared using two step synthesis:
In the first step, the polycrystalline Bi2VO5.5 ceramic was synthesised via a conventional solid state reaction route. The stoichiometric mixture of initial powders of Bi2O3 and V2O5 were ball-milled in pure acetone for 6 h. The milling was performed in steps of 1 h with rest intervals of 10 min. The mixture was initially heated up to 770 K and then to 1020 K in air. It was kept at this temperature for 24 h and grinded next. The calcined powder was mixed with a small amount of ethyl alcohol binder and cold-pressed into pellets (12 mm in diameter and 2–3 mmin thickness) under a compacting pressure of 26 kNcm−2. The obtained pellets were sintered at 1070 K for 24 h with heating and cooling rates of 50 Kh−1.
In the second step, the obtained Bi2VO5.5 was powdered in mortar and next melted using the conventional melt quenching technique. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, in the frequency range from 10mHz to 10 MHz and with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer.
Dataset file
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.Example script for calculation:
https://github.com/antespi/s3md5
File details
- License:
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CC BYAttribution - Raw data:
- Data contained in dataset was not processed.
Details
- Year of publication:
- 2015
- Verification date:
- 2021-07-14
- Dataset language:
- English
- Fields of science:
-
- materials engineering (Engineering and Technology)
- DOI:
- DOI ID 10.34808/tfrh-2565 open in new tab
- Verified by:
- Gdańsk University of Technology
Keywords
References
- publication STRUKTURA ORAZ WŁAŚCIWOŚCI ELEKTRYCZNE MATERIAŁÓW SZKLISTYCH ZAWIERAJĄCYCH GRANULE FERROELEKTRYKA Bi2VO5,5
- publication Nonlinear and linear impedance of bismuth vanadate ceramics and its relation to structural properties
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