EPR of Mn as densifying agent in SnO2 powders
| dc.contributor.author | Las, W. C. [UNESP] | |
| dc.contributor.author | Gouvea, D. | |
| dc.contributor.author | Sano, W. | |
| dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
| dc.contributor.institution | Universidade de São Paulo (USP) | |
| dc.date.accessioned | 2014-05-27T11:19:45Z | |
| dc.date.available | 2014-05-27T11:19:45Z | |
| dc.date.issued | 1999-08-01 | |
| dc.description.abstract | Electron Paramagnetic Resonance (EPR) spectra have been obtained at room temperature and at X-band in powders of SnO2 doped with Mn from 0.3 to 10% and submitted to heat treatment from 500 to 900 °C. Mn ions are probably located at particle surfaces as Mn2+, evidenced by its single EPR line which narrows by the exchange interaction effect due to particle growth observed by the BET technique. In samples doped above 1% formation Of Mn3O4 is detected on particle surfaces and a small quantity of Mn is thermally diffused into the bulk as Mn4+. Powders compacted and sintered at 1300 °C confirmed that Mn2+ ions remain at grain boundaries acting as densifying agent. | en |
| dc.description.affiliation | Instituto de Química da UNESP, C.P. 355, 14801-970 Araraquara, SP | |
| dc.description.affiliation | Escola Politécnica da USP Depto. Engenharia Metalurgica M., Rua Professor Mello Moraes 2463, 05508-900 São Paulo, SP | |
| dc.description.affiliation | Instituto de Física da USP, Rua do Matão, Travessa R 187, 05508-900, São Paulo, SP | |
| dc.description.affiliationUnesp | Instituto de Química da UNESP, C.P. 355, 14801-970 Araraquara, SP | |
| dc.format.extent | 331-337 | |
| dc.identifier | http://dx.doi.org/10.1016/S1293-2558(00)80087-4 | |
| dc.identifier.citation | Solid State Sciences, v. 1, n. 6, p. 331-337, 1999. | |
| dc.identifier.doi | 10.1016/S1293-2558(00)80087-4 | |
| dc.identifier.issn | 1293-2558 | |
| dc.identifier.scopus | 2-s2.0-0012872012 | |
| dc.identifier.uri | http://hdl.handle.net/11449/65812 | |
| dc.identifier.wos | WOS:000084083800002 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Solid State Sciences | |
| dc.relation.ispartofjcr | 1.861 | |
| dc.relation.ispartofsjr | 0,574 | |
| dc.rights.accessRights | Acesso restrito | |
| dc.source | Scopus | |
| dc.title | EPR of Mn as densifying agent in SnO2 powders | en |
| dc.type | Artigo | |
| dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
| unesp.author.orcid | 0000-0003-3607-8793[2] |