Excited state in nanofluid containing perovskite manganate particles
Main Article Content
Abstract
Abstract: The nanofluids containing the surface activated particles have great application potential in modern technology. In this paper, we studied the optical properties of the ceramic particles of forms Ca(FeMn)O3 and (CaPr)(MnRu)O3 dispersed in water solution by using SPAN-80 as surface activated agent (called surfactant). The UV-Vis absorption and photoluminescence spectroscopies were involved. The results showed that the prepared nanofluids possess the different optical properties in comparision with their crystalline counterparts. In facts, they showed clear blue shifts of spectral lines, changes of band gap, and especially enhancements of emission intensities.
Keywords: Perovskite; Manganate; Structure; Electronic.
References
[1] R. Gundakaram, P. V. Arulraj Avanitha, C. N. R. Rao, N. Gayathri, A. K. Raychaudhuri, A. K. Cheetham, “Effect of Cr substitution on the crystal and magnetic structure of (Pr0.55Ca0.45)MnO3: A neutron powder diffraction investigation", J. Solid State Chem. 127 (1996) 354.
[2] K. Yoshii, A. Nakamura, “Reversal of Magnetization in La0.5Pr0.5CrO3”, J. Solid State Chem. 155 (2000) 447.
[3] X.J. Liu, Z.Q. Li, P. Wu, H.L. Bai, E.Y. Jiang, “The effect of Fe doping on structural, magnetic and electrical transport properties of CaMn1−xFexO3 (x = 0–0.35)”, Solid State Communications 142 (2007) 525–530.
[4] J. M. D. Coey, M. Viret and S. von Molnaír, “Mixed-valence manganites”, Advances in Physics, 1999, Vol. 48, No. 2, 167, 293.
[2] K. Yoshii, A. Nakamura, “Reversal of Magnetization in La0.5Pr0.5CrO3”, J. Solid State Chem. 155 (2000) 447.
[3] X.J. Liu, Z.Q. Li, P. Wu, H.L. Bai, E.Y. Jiang, “The effect of Fe doping on structural, magnetic and electrical transport properties of CaMn1−xFexO3 (x = 0–0.35)”, Solid State Communications 142 (2007) 525–530.
[4] J. M. D. Coey, M. Viret and S. von Molnaír, “Mixed-valence manganites”, Advances in Physics, 1999, Vol. 48, No. 2, 167, 293.