Effect of Al2O3 matrix on the optical properties of NdAlO3 in NdAlO3/Al2O3 ceramic-ceramic composite

• Published in: Scripta materialia Vol. 44; no. 8-9; pp. 2105 - 2109
• Main Authors: MATHUR, S, VEITH, M, SHEN, H, LECERF, N, HÜFNER, S
• Format: Conference Proceeding Journal Article
• Language: English
• Published: New York, NY Elsevier Science 18-05-2001
• Subjects: Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Nanoscale materials and structures: fabrication and characterization; Physics; Composite materials; Ternary compounds; Optical properties; Neodymium oxides; Photoluminescence; Nanocomposite; Nanostructures; Experimental study; Alumina; Sol-gel process; Precursor; Aluminium oxides
• ISSN: 1359-6462; 1872-8456
• DOI: 10.1016/S1359-6462(01)00883-1

Nanocomposites are being extensively investigated to obtain new materials with tailored and improved properties. Compositionally different nanocomposites where two or more solid phases are interdispersed are difficult to prepare by conventional preparation techniques, and phase segregation and agglomeration of particles are commonly observed. This challenge of intimate mixing of consituents can be achieved by combining the different elements required for the target ceramic or composite material in a single molecule. This paper describes the sol-gel synthesis of a NdAlO3 ceramic and a NdAlO3/Al2O3 ceramic-ceramic composite by a positional control of atoms in Single-Source Precursors. The incorporation of neodymium ions or nanoscaled Nd-based phases in insulating hosts has important applications as solid-state laser materials, phosphors for fluorescent lighting, optical amplifiers, among others (Tissue, 1989). The effect of the alumina matrix on the luminescent efficiency and concentration quenching phenomenon of Nd(3+) ions in NdAlO3 was investigated. (CSA)