Combined ab initio and experimental study of Mg-, Ca-, Sr-, Ba-doped bismuth titanate pyrochlores (BTO) has been carried out. It is revealed that the substitution of bismuth atoms by alkaline earth elements is a preferable process rather than the substitution of titanium atoms according to the structural and energy parameters from the first-principles calculations. The pyrochlore-type compounds Bi1.5Mg(Ca)xTi2O7-δ have been obtained at x = 0.25. Bismuth titanate pyrochlores doped with Mg and Ca are wide-band semiconductor materials with the maximum of light absorption at wavelengths <450 nm. The impedance study of new pyrochlore compound Bi1.5Ca0.25Ti2O7-δ was carried out. Ca-doped BTO is a mixed electronic-ionic conductor with the activation energy of bulk conductivity about 1.00 eV in the temperature range 200–750 °C.
Solid State Ionics – Elsevier
Published: Apr 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera