Selective occupancy of sites by rare earths in K2Nd(1-x)EuxNb5O15 nanopowders, where x = 0, 0. 0025, 0. 025, 0. 05 and 0. 1, prepared by modified polyol method

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorNamikuchi, Eliane Ayumi-
Autor(es): dc.creatorLima Nobre, Marcos Augusto-
Autor(es): dc.creatorLanfredi, Silvania-
Data de aceite: dc.date.accessioned2021-03-11T00:29:03Z-
Data de disponibilização: dc.date.available2021-03-11T00:29:03Z-
Data de envio: dc.date.issued2018-12-11-
Data de envio: dc.date.issued2018-12-11-
Data de envio: dc.date.issued2015-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.820.361-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/168329-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/168329-
Descrição: dc.descriptionNiobates with tetragonal tungsten bronze TTB-type structure have presented great technological potential due to their dielectric, ferroelectric, pyroelectric properties. The preparation by the modified polyol method and structural characterization of K2Nd(1-x)EuxNb5O15 nanopowders, where x = 0; 0. 0025; 0. 025; 0. 05 e 0. 1, were investigated. The structural parameters were analyzed as a function of concentration of europium ions in the K2NdNb5O15 host structure using the Rietveld method. From structural parameters was determined the TTB-type structure with tetragonal symmetry, where the pentagonal sites is occupied by K+ and Eu3+ ions and tetragonal sites is occupied only by Nd3+ ions. The addition of europium in the host structure led to a decrease in the lattice parameters, compatible with the increasing degree of distortion of NbO6 polyhedra. The average crystallite size showed values between 18. 25 and 26nm.-
Formato: dc.format361-366-
Idioma: dc.languageen-
Relação: dc.relationMaterials Science Forum-
Relação: dc.relation0,180-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectNiobates-
Palavras-chave: dc.subjectRietveld refinement-
Palavras-chave: dc.subjectStructural characterization-
Título: dc.titleSelective occupancy of sites by rare earths in K2Nd(1-x)EuxNb5O15 nanopowders, where x = 0, 0. 0025, 0. 025, 0. 05 and 0. 1, prepared by modified polyol method-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.