Nonlinear impedance of Bi2VO5.5 glass-ceramic annealed at 423 K was measured with impedance spectroscopy method at high temperature region

Opis

The nonlinear electrical properties of Bi2VO5.5 glass-ceramic annealed at 423 K was measured by impedance spectroscopy method.

Bi2VO5.5 glas-ceramic was prepared from appropriate amounts of Bi2O3 and V2O5 powders. 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. Next samples were annealed at 423 K.

For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 373 K to 913 K, frequency range of 10 mHz to 1 MHz, with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer. The higher harmonic components (harmonic 2) were measured up to frequency of 1000 Hz. Here the impedance for harmonic components was defined as the ratio of the voltage base wave to the n-th harmonic current component: Zn∗= U0∗/In∗, where Zn⁎ including the base wave generally depend on the sample voltage U1⁎ base wave amplitude. From Zn⁎ allother independent variables are calculated. The dependence of current density on the cosinusoidal electric field E(t)= E0cos(ωt) leads to the following expression:

j´ = σ´0hE0 cos (ωt) + σ´1hE0 cos (2ωt) + σ´2hE0 cos (3ωt) + …
Where σ´0h denotes base conductivity, while σ´1h, σ´2h etc. are higher harmonics conductivity. The admittivity for harmonic components with n ≥1, is calculated from relation σ⁎n = i2πfε0ε⁎n.

Plik z danymi badawczymi

110.zip

617.5 kB, S3 ETag 04c44cbf0e582e490e68a8e5d9ea64d9-1, pobrań: 63

Hash pliku liczony jest ze wzoru
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} gdzie pojedyncza część pliku jest wielkości 512 MB

Przykładowy skrypt do wyliczenia:
https://github.com/antespi/s3md5

pobierz

Informacje szczegółowe o pliku

Licencja:: otwiera się w nowej karcie

CC BY

Uznanie autorstwa
Dane surowe:: Dane zawarte w datasecie nie zostały w żaden sposób przetworzone.

Informacje szczegółowe

Rok publikacji:

2015

Data zatwierdzenia:

2021-07-14

Język danych badawczych:

angielski

Dyscypliny:

inżynieria materiałowa (Dziedzina nauk inżynieryjno-technicznych)

DOI:

10.34808/a5s5-qe07

Weryfikacja:

Politechnika Gdańska

Słowa kluczowe

Powiązane zasoby

Cytuj jako

Autorzy

wyświetlono 126 razy

Wyszukiwarka