As far as I am concern still need to be investigated. There was a kind project in Europe but was not accepted. Are you researching on BaZrxT1-xiO3?

Thanks, Yes, I'm working on that system, undoped and doped. I hope it's possible to continue or expand the investigations of their usage as friendly microsources of energy.

Li-doped BZT is worth working for use as a replacement of lead-based ceramic, somehow.

For which type of application? Li doped BZT is a good material?

For your interest :)

http://smartech.gatech.edu/xmlui/handle/1853/39262

Cheers!

Thanks ^_^

Well, there are kinds of non-lead materials apart from Li-BZT, for example, ZnO. Some applications such as nanogenerators seem not applicable for BZT-system. By the way, is it possible to make BZT nanotubes or BZT fiber, any experinces or publications ?

If PZT nanotubes or fibers can be produced then BZT-based materials with similar shapes should also be produced. Will they be better, please suggest.

What you need is large small signal d33, I think BZT-based materials may not be the best option for this (comparing bulk materials). But I am not 100 % familiar with the system. Normally in small shape things you have a reduce response, but I cannot tell you if it would be proportional for all materials. To synthetize BZT-based fiber should be definitely possible but may not be trivial. You can actually check a recent paper

Phys. Status Solidi C 9, No. 7, 1574–1576 (2012) / DOI 10.1002/pssc.201200010 (Fabrication of Ca, Zr doped BaTiO3 ferroelectric nanofibers by electrospinning, http://onlinelibrary.wiley.com/doi/10.1002/pssc.v9.7/issuetoc)

They did pretty similar composition nanofibers. Unfortunately, I normally use a conventional sold state synthesis for my materials.

Cheers,

Matias

Thanks Matias Acosta I'll look up into the article and get back to this later on.

The article on doped-BZT fiber in Phys. Status Solidi mentioned above is an initiative work (that I wished to do as the first !). It's interesting that the fiber is unwoven and required heat treatment at a low temperature of 700 C which is not able to do in solid state reaction methods. Anyway, it depends on what we want and where to use the materials we fabricate.

Yes, of course but if you want energy harvesting one important parmeter I guess is d33

yes, Matias , I guess there is/are group(s) somewhere have been measuring their piezoelectric coefficients which yet have not been reported. (Again, I wish to do it as the first.)

In low dimensional devices probably not is true, but in standard bulk samples it should be already reported the BZT system is quite studied already....by the way this may be itenresting for you.

http://green-energy-harvesting.blogspot.de/p/energy-harvesting-papers_02.html

and in this paper:

Piezoelectric Microgenerators—Current Status and Challenges

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 56, no. 8, 2009

Hyun-Uk Kim, Woo-Ho Lee, H. V. Rasika Dias, and Shashank Priya

you have the development of some lad-free harvesters

Thanks a lot, I'll look through the link and papers. Nice to have direct informations in the RG platform like this.

I myself have reported the piezoelectric coefficients of the bulk doped BZT to be sintered at low temperature but never for the nanostructured BZT ^_^

good :) yeah well in my case I focus more on the development of high strain materials for actuators so I do not care that much in the d33 but in the d33*

D33* ?