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DC Field | Value | Language |
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dc.contributor.author | Bruno, J. C. | - |
dc.contributor.author | Cavalheiro, A. A. | - |
dc.contributor.author | Zaghete, M. A. | - |
dc.contributor.author | Cilense, M. | - |
dc.contributor.author | Varela, José Arana | - |
dc.date.accessioned | 2014-05-20T15:24:15Z | - |
dc.date.accessioned | 2016-10-25T17:58:25Z | - |
dc.date.available | 2014-05-20T15:24:15Z | - |
dc.date.available | 2016-10-25T17:58:25Z | - |
dc.date.issued | 2004-03-15 | - |
dc.identifier | http://dx.doi.org/10.1016/j.matchemphys.2003.11.014 | - |
dc.identifier.citation | Materials Chemistry and Physics. Lausanne: Elsevier B.V. Sa, v. 84, n. 1, p. 120-125, 2004. | - |
dc.identifier.issn | 0254-0584 | - |
dc.identifier.uri | http://hdl.handle.net/11449/34891 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/34891 | - |
dc.description.abstract | Single-phase perovskite 0.9Pb(Mg1/3Nb2/3)O-3-0.1PbTiO(3) (PMN-PT) powders were prepared by using a Ti-modified columbite precursor (MNT) obtained by the polymeric precursor method. The innovation consists in the preparation of Ti-modified columbite in order to react directly with a stoichiometric amount of PbO to obtain pyrochlore-free PMN-PT powders. It has been shown that titanium oxide forms a solid solution with columbite (MN) and does not affect the obtaining of a single-phase columbite precursor. Thus, a high amount of perovskite phase can be obtained by reaction with PbO at 800 degreesC for 2 h. Effects of K and Li additives on the structure of MNT and PMN-PT were studied. X-ray diffraction studies were carried out to verify the phase formation at each processing step and these data were used for structural refinement by the Rietveld method. Both K and Li additives increase the crystallinity of MNT powders, being this effect more intense for the Li-doped samples. For PMN-PT samples the additives cause an insignificant decrease in the amount of perovskite phase. The morphology of the PMN-PT powder depends on the type of the additive. (C) 2003 Elsevier B.V All rights reserved. | en |
dc.format.extent | 120-125 | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.source | Web of Science | - |
dc.subject | ceramics | pt |
dc.subject | chemical synthesis | pt |
dc.subject | powder diffraction | pt |
dc.subject | Rietveld | pt |
dc.subject | Pb(Mg1/3Nb2/3)O-3 | pt |
dc.title | Structural effects of Li and K additives on the columbite precursor and 0.9PMN-0.1PT powders | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | UNESP, Inst Quim, CMDMC, BR-14801970 Araraquara, SP, Brazil | - |
dc.description.affiliationUnesp | UNESP, Inst Quim, CMDMC, BR-14801970 Araraquara, SP, Brazil | - |
dc.identifier.doi | 10.1016/j.matchemphys.2003.11.014 | - |
dc.identifier.wos | WOS:000188857400019 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Materials Chemistry and Physics | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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