Structure Characterisation and Optical Properties of Eu³⁺-Doped LaAlO₃

Abstract:

In this paper, Eu³⁺-doped LaAlO₃ powders which with the concentration of Eu³⁺ in the range of 0~5% were prepared by a new liquid mixing method. The structure of the LaAlO₃ powders were investigated by X-ray diffraction (XRD), and the influence of the increase of temperature on the crystal structure were also studied. We found that the powders crystallized above 800 which means higher temperature can improve the crystallization. The influences of the increasing Eu³⁺ concentration were also studied through the XRD patterns. The average sizes of the samples were also calculated by the Sherrer equation. The optical properties of different concentration of Eu³⁺-doped LaAlO₃ particles were investigated through the reflection spectra.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 136-141
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.136
• Online since: February 2013
• Authors: Gang Wu, Hong Mei Deng, Nuo Fan Ding, Hu Rui Yan, Ping Xiong Yang, Jun Hao Chu
• Keywords: Eu³⁺-Doped LaAlO₃, Liquid State Reaction, Reflection Spectra

References

[1] C. Sun, J. Wang, P. Hu, M. J. Kim, X. Xing, Effects of Al substitution on the spontaneous polarization and lattice dynamics of the PbTi1−xAlxO3 Dalton Trans 2010, 39, 5183.

DOI: 10.1039/c000608d

[2] M. T. Buscaglia, M. Viviani, Z. Zhao, V. Buscaglia, Synthesis of BaTiO3 Core−Shell Particles and Fabrication of Dielectric Ceramics with Local Graded Structure Chem Mater 2006, 18, 4002.

DOI: 10.1021/cm060403j

[3] D. Lybye, F. W. Poulsen, M. Mogensen, Conductivity of A- and B-site doped LaAlO3, LaGaO3, LaScO3 and LaInO3 perovskites Solid State Ion 2000, 128, 91.

DOI: 10.1016/s0167-2738(99)00337-9

[4] R. K. Simon, C. E. Platt, K. P. Daly, A. E. Lee, M. K. Wager, Low‐loss substrate for epitaxial growth of high‐temperature superconductor thin films Appl Phys Lett 1988, 53, 2677.

DOI: 10.1063/1.100543

[5] S. Kim, Ki Tae Lee, Hong Lim Lee, Phase relationship of barium and magnesium doped LaGaO3 perovskite oxides Mater Lett 2002, 52, 342.

DOI: 10.1016/s0167-577x(01)00419-0

[6] D. Hreniak, W. Strek, P. J. Deren, A. Bednarkiewicz, A. Lukowiak, Synthesis and luminescence properties of Eu3+-doped LaAlO3 nanocrystals J. Alloys Compd 2006, 828, 408-412.

DOI: 10.1016/j.jallcom.2005.01.086

[7] P. J. Deren, M. A. Weglarowicz, P. Mazur, Spectroscopic properties of LaAlO3 nanocrystals doped with Tb3+ ions J Lumin 2007, 780, 122-123.

DOI: 10.1016/j.jlumin.2006.01.287

[8] X. M. Liu, L. S. Yan, J. Lin, Synthesis and Luminescent Properties of LaAlO3: RE3+ (RE=Tm, Tb) Nanocrystalline Phosphors via a Sol-Gel Process J Phys Chem C 2009, 113, 8478–8483.

DOI: 10.1021/jp9013724

[9] X. M. Liu, J. P. Zou, J. Lin, Nanocrystalline LaAlO3 : Sm3+ as a Promising Yellow Phosphor for Field Emission Displays J Electrochem Soc 2009, 156, 43–47.

DOI: 10.1149/1.3039993

[10] C. J. Howard, B. J. Kennedy, B. C. Chakoumakos, Neutron powder diffraction study of rhombohedral rare-earth aluminates and the rhombohedral to cubic phase transition J Phys Condens Matter 2000, 12, 349.

DOI: 10.1088/0953-8984/12/4/301

[11] G. Y. Sung, K. Y. Kang, S. C. Park, Synthesis and preparation of lanthanum aluminate target for radiofrequency magnetron sputtering J Am Ceram Soc 1991, 74(2), 437.

DOI: 10.1111/j.1151-2916.1991.tb06904.x

[12] P. K. Sahu, S. K. Behera, S. K. Pratihar, S. Bhattacharyya, Low temperature synthesis of microwave dielectric LaAlO3 nanoparticles: effect of chlorideon phase evolution and morphology Ceram Int 2004, 30, 1231.

DOI: 10.1016/j.ceramint.2003.12.075

[13] L. J. Berchmans, S. Angappana, A. Visuvasama, K. B. Ranjith Kumar, Preparation and characterization of LaAlO3 Mater Chem Phys 2008, 109, 113.

[14] H. F. Yu, Y. M. Guo, Effects of heating atmosphere on formation of crystalline citrate-derived LaAlO3 nanoparticles J Alloys Compds 2011, 509, (1984).

DOI: 10.1016/j.jallcom.2010.10.109

[15] Z. Li, S. Zhang, W. E. Lee, Molten salt synthesis of LaAlO3 powder at low temperatures J Eur Ceram Soc 2007, 27, 3201.

[16] T. Kojima, K. Nomura, Y. Miyazaki, K. Tanimoto, Synthesis of various LaMO3 perovskites in molten carbonates J Am Ceram Soc 2006, 89, 3610.

DOI: 10.1111/j.1551-2916.2006.01273.x

[17] S. Naci Koc, F. Oksuzomer, E. Yasar, Effect of sol–gel modifications on formation and morphology of nanocrystalline lanthanum aluminate Mater Res Bull 2006, 41, 2291–2297.

DOI: 10.1016/j.materresbull.2006.04.025

[18] V. Kumar, S. Kr. Sharma, T. P. Sharma, Band gap determination in thick films from reflectance measurements Opt Mater 1999, 12, 115-119.

DOI: 10.1016/s0925-3467(98)00052-4

[19] Burstein E. Phys Rev 1954, Anoma1ous Optical Absorption Limit in InSb 93, 632–633.

DOI: 10.1103/physrev.93.632