Abstract
Lanthanum doped Bi3TiNbO9 thin films (LBTN-x, La 3+ contents x = 5%, 15%, 25% and 35 mol.%) with layered perovskite structure were fabricated on fused silica by pulsed laser deposition method. Their linear and nonlinear optical properties were studied by transmittance measurement and Z-Scan method. All films exhibit good transmittance (>55%) in visible region. For lanthanum doping content are x = 5%, 15% and 25 mol.%, the nonlinear absorption coefficient of LBTN-x thin films increases with the La 3+ content, then it drops down at x = 35 mol.% when the content of La3+ in (Bi2O2)2+ layers is high enough to aggravate the orthorhombic distortion of the octahedra. We found that, 25 mol.% is the optimal La3+ content for LBTN-x thin films to have the largest nonlinear absorption coefficient making the LBTN-x film a promising candidate for absorbing-type optical device applications.
Original language | English |
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Pages (from-to) | 5364-5367 |
Number of pages | 4 |
Journal | Journal of Alloys and Compounds |
Volume | 509 |
Issue number | 17 |
DOIs | |
Publication status | Published - 28 Apr 2011 |
Scopus Subject Areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
User-Defined Keywords
- Lanthanum doped BiTiNbO
- Nonlinear optical absorption
- Optical constant
- Pulsed laser deposition