Is doping in BaTiO3 only related to prevent oxygen vacancy migration?

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Where would? can? positive charge(vacancy) be when grounded?

Hello I plasma(H2N2) treated Al2O3 plate (edge is connected to ground) and wondered if oxygen vacancy migration on the plate can occurs as electrons escape through edge. Or whatever positive...

15 February 2021 8,118 1 View

Is it considered as a defect if energy level is formed below/above 0.5 ev?

I was doing researches on BTO CL and found 2 peaks at 1.65 and 1.79 eV I thought they are energy levels introduced by dopants (I was thinking they were formed by Ca and Y) but my friend says...

13 December 2018 6,270 5 View

Are vacancies supposed to form clusters?

here are monochromatic cathodoluminescence images and rg composite image of BaTiO3 my question is are vacancies supposed to form a cluster? thermodynamically? cuz I think vacancies are randomly...

11 December 2018 9,486 0 View

Is it considered as a defect if energy level is formed below/above 0.5 ev?

I was doing researches on BTO CL and found 2 peaks at 1.65 and 1.79 eV I thought they are energy levels introduced by dopants (I was thinking they were formed by Ca and Y) but my friend says...

11 December 2018 2,727 6 View

How can I thermally degrade multilayer ceramic capacitor?

Hi i'm trying to thermally degrade MLCC. I've tried heating it upto 200 C and putting bias like 23 V since its rated voltage is 10V and maximum temperature is 125C But it does not look like...

31 December 2017 6,465 2 View

Do you think we can measure particles with Residual Gas Analyzer(RGA)?

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New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

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Which fluorescent dye to use for measuring total ROS production?

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Does any one can help me choose a reasonable basis set for intermediate metal ions interactions with guanine (i.e Fe2+, Mn2+, Cu2+ and exc.)?

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What could be some reasons why unstimulated monocytes are getting activated?

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Why does intensity drops as concentration increases?

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POlymer+DMSO solution and moisture??

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Should we reduce the standard unit of length to 0.31951540592 meter ?

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What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

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How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

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What might be the reason for obtaining two bands in plant genomic DNA extraction?

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Imad Disher

It is well known that BaTiO3 has very high dielectric constant. however, the high value of the dielectric constant occurs at a very narrow range of temperatures close to the Curie temperature (θc) of the BaTiO3 (about 120oC). Thus, pure BaTiO3 is rarely used at room temperature.

One of the approaches to solve this issue is to dope BaTiO3 with Sr or Pb to make solid solutions as these titanates have isostructures with BaTiO3. Such compounds have broader θc range close to RT.

Ahmed Hmeed