Wu Wei-Dong et al 2008 Chinese Phys. Lett. 25 1465 doi:10.1088/0256-307X/25/4/081
Wu Wei-Dong1,2, Wang Feng1,3, Ge Fang-Fang1,4, Bai Li1,2, Lei Hai-Le1, Tang Yong-Jian1,2, Ju Xin5, Chen Zheng-Hao1,6 and N Wei-Guo1,3
Show affiliationsCo nanoparticles embedded in a BaTiO3 matrix, namely Co-BaTiO3 nano-composite films are grown on Mg(100) single crystal substrates by the pulsed laser deposition (PLD) method at 650°C. Optical properties of the Co- BaTiO3 nano-composite films are examined by absorption spectra (AS) and photoluminescence (PL) spectra. The results indicate that the concentration of Co nano-particles strongly influences the electron transition of the Co-BaTiO3 nano-composite films. The PL emission band ranging from 1.9 to 2.2 eV is reported. The AS and PL spectra suggest that the band gap is in the range of 3.28-3.7 eV.
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
78.40.-q Absorption and reflection spectra: visible and ultraviolet
Condensed matter: electrical, magnetic and optical
Issue 4 (April 2008)
Received 24 October 2007
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