The impedance analysis of sintered MgTiO3 ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU123417" target="_blank" >RIV/00216305:26620/17:PU123417 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jallcom.2017.01.117" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2017.01.117</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2017.01.117" target="_blank" >10.1016/j.jallcom.2017.01.117</a>
Alternative languages
Result language
angličtina
Original language name
The impedance analysis of sintered MgTiO3 ceramics
Original language description
In the present study the effect of preparation conditions on microstructure and electrical properties of MgTiO3 ceramics was investigated. Mixture of MgO and TiO2 powders was subjected to mechanical activation for different time periods. Two types of sintering (two-step and HIP sintering) were performed on green bodies prepared by cold isostatic pressing. AC impedance spectroscopy in the low-frequency range (from 20 Hz to 1 MHz), at room and elevated temperatures, were performed in order to separate contribution of grains and grain boundaries to capacitance, resistance and conductivity of magnesium titanate ceramics. The special attention was directed to explanation of the influence of mechanical activation on electrical and morphological changes in sintered samples. The significant decrease of partial oxygen pressure in HP sintering atmosphere caused the change from insulating behavior of MgTiO3 samples after two-step sintering to semiconducting one.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
1873-4669
Volume of the periodical
701
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
9
Pages from-to
107-115
UT code for WoS article
000395839100016
EID of the result in the Scopus database
2-s2.0-85009868492