title: Thermal, vibrational and optical properties of PrLuO3interlanthanides from hydrothermally-derived precursors.
abstract: PrLuO3interlanthanides were prepared at temperatures ranging from 800 °C to 1600 °C using hydrothermally-derived precursors. The chemical reactions observed include the conversion and segregation of Pr(OH)3and LuO(OH), respectively, into PrO2and Lu2O3cubic oxides below 1200 °C, followed by the production of a mixture of hexagonal P63/mmc and orthorhombic Pnma PrLuO3phases at 1400 °C. Phase-pure orthorhombic PrLuO3was obtained at 1600 °C, which was corroborated by Raman and micro far-infrared spectroscopic analyses. Photoluminescence, colorimetric and lifetime measurements were carried out in PrLuO3samples. Dominant emission verified in samples calcined at 1400 °C corresponds to the hypersensitive3P0→3F2transition with a color purity of 97% (decay times of 12 μs and 3 μs), while emissions for the phase-pure samples correspond to the3P0→3H6and3P0→3H5transitions with a color purity of 94% (a single luminescence lifetime of 12 μs). The optical properties of PrLuO3interlanthanides thereby suggest that they can be used as luminescent materials in both structural arrangements.
authors.affiliation: Departamento de Química, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, ICEB II, Ouro Preto-MG, 35400-000, Brazil. anderson_dias@iceb.ufop.br.
authors.forename: Júlia C
authors.initials: JC
authors.lastname: Soares
authors.affiliation: Departamento de Química, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, ICEB II, Ouro Preto-MG, 35400-000, Brazil. anderson_dias@iceb.ufop.br.
authors.forename: Kisla P F
authors.initials: KP
authors.lastname: Siqueira
authors.affiliation: Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 Ribeirão Preto, Brazil.
authors.forename: Paulo C
authors.initials: PC
authors.lastname: de Sousa Filho
authors.affiliation: Departamento de Física, ICEx, Universidade Federal de Minas Gerais, C.P. 702, Belo Horizonte-MG, 30123-970, Brazil.
authors.forename: Roberto L
authors.initials: RL
authors.lastname: Moreira
authors.affiliation: Departamento de Química, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, ICEB II, Ouro Preto-MG, 35400-000, Brazil. anderson_dias@iceb.ufop.br.
authors.forename: Anderson
authors.identifier: http://orcid.org/0000-0001-7413-1087
authors.initials: A
authors.lastname: Dias