Structural, optical, and magnetic properties of NiMoO4 nanorods prepared by microwave sintering

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Moura, Ana Paula de [UNESP]
Oliveira, Larissa Helena de [UNESP]
Rosa, Ieda Lucia Viana
Xavier, Camila Soares [UNESP]
Lisboa-Filho, Paulo Noronha [UNESP]
Li, Máximo Siu
La Porta, Felipe de Almeida [UNESP]
Longo, Elson [UNESP]
Varela, José Arana [UNESP]

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We report on the structural, optical, and magnetic properties of α,β-NiMoO4 nanorods synthesized by annealing the NiMoO4:nH2O precursor at 600°C for 10 minutes in a domestic microwave. The crystalline structure properties of α,β-NiMoO4 were investigated using X-ray diffraction (XRD), Fourier transform infrared (FTIR), and Raman (FT-Raman) spectroscopies. The particle morphologies and size distributions were identified by field emission microscopy (FE-SEM). Experimental data were obtained by magnetization measurements for different applied magnetic fields. Optical properties were analyzed by ultraviolet-visible (UV-vis) and photoluminescence (PL) measurements. Our results revealed that the oxygen atoms occupy different positions and are very disturbed in the lattice and exhibit a particular characteristic related to differences in the length of the chemical bonds (Ni-O and Mo-O) of the cluster structure or defect densities in the crystalline α,β-NiMoO4 nanorods, which are the key to a deeper understanding of the exploitable physical and chemical properties in this study.



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Thescientificworldjournal, v. 2015, 2015.