Ferroelectric Thin Films Deposited by Laser Ablation

1990 ◽  
Vol 200 ◽  
Author(s):  
K. Ramkumar ◽  
J. Lee ◽  
A. Safari ◽  
S.C. Danforth
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Lead Zirconate Titanate ◽  
Laser Pulses ◽  
Lead Zirconate ◽  
Ferroelectric Materials ◽  
Excimer Lasers ◽  
Annealing Conditions ◽  
Bulk Target ◽  
Laser Ablation Technique

ABSTRACTThe deposition of thin films of ferroelectric materials by the laser ablation technique was investigated. The films were grown by ablation from a bulk target of lead zirconate titanate (PZT) exposed to laser pulses from CO2 amd KrF excimer lasers. The effects of deposition and annealing conditions on the structure and stoichiometry of the films were studied.

Lead Zirconate-Titanate Thin Films Prepared by the Laser Ablation Technique

1990 ◽  
Vol 200 ◽  
Author(s):  
C. K. Chiang ◽  
L. P. Cook ◽  
P. K. Schenck ◽  
P. S. Brody ◽  
J. M. Benedetto
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
X Ray ◽  
Ablation Technique ◽  
Zirconate Titanate ◽  
Deposited Films ◽  
Plate Type ◽  
Laser Ablation Technique

ABSTRACTLead zirconate-titanate (PZT) thin films were prepared by the laser ablation technique. The PZT (Zr/Ti=53/47) target was irradiated using a focused q-switched Nd:YAG laser (15 ns, 100 mJ at 1.064 μ;m). The as-deposited films were amorphous as indicated by X-ray powder patterns, but crystallized readily with brief annealing above 650°C. The dielectric constant and the resistivity of the crystallized films were studied using a parallel-plate type capacitor structure.

Pulsed laser-ablation deposition of thin films of molybdenum silicide and its properties as a conducting barrier for ferroelectric random-access memory technology

1999 ◽  
Vol 14 (3) ◽  
pp. 940-947 ◽  
Author(s):  
Sucharita Madhukar ◽  
S. Aggarwal ◽  
A. M. Dhote ◽  
R. Ramesh ◽  
S. B. Samavedam ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Lead Zirconate Titanate ◽  
Ferroelectric Properties ◽  
Random Access ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Lead Zirconate ◽  
Capacitive Coupling ◽  
Molybdenum Silicide

We report on the feasibility of using molybdenum silicide as a conducting barrier for integration of ferroelectric lead zirconate titanate capacitors on Si. Thin films of MoSi2 were deposited by pulsed laser-ablation deposition (PLD). The silicide films showed a structural transition from amorphous to orthorhombic to tetragonal phase as the temperature of deposition was changed from room temperature to 900 °C. The four-probe resistivity and surface roughness of the films decreased with an increase in the deposition temperature and crystallinity of the phase. Ferroelectric (La, Sr)CoO3/Pb(Nb, Zr, Ti)O3/(La, Sr)CoO3 capacitors were grown on Si/poly Si/MoSi2, and Si/poly Si/MoSi2/Pt structures. Transmission electron microscopy (TEM) studies of the MoSi2/LSCO and MoSi2/Pt/LSCO heterostructures indicated the formation of a thin layer of SiO2. In the case of Pt/MoSi2, Pt reacts with the silicide and forms PtSi, consuming the entire platinum layer and, thus, makes it unsuitable as a composite barrier. Electrical testing of the LSCO/PNZT/LSCO capacitors through capacitive coupling showed desirable ferroelectric properties on these substrates.

scholarly journals Tunable Piezophotonic Effect on Core-Shell Nanoparticles Prepared by Laser Ablation in Liquids under External Voltage

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
A. K. Kodeary ◽  
S. M. Hamidi
Keyword(s):  
Laser Ablation ◽  
Lead Zirconate Titanate ◽  
Laser Pulses ◽  
Lead Zirconate ◽  
Core Shell ◽  
Laser Ablation In Liquid ◽  
Shell Nanoparticles ◽  
Nonlinear Properties ◽  
Shell Nanostructures ◽  
Core Shell Nanoparticles

We report an experimental study on the piezophotonic effect of gold and lead zirconate titanate (PbZrTiO3) nanoparticles (NPs) and also their core-shell nanostructures prepared by the laser ablation in liquid method. To obtain these NPs and composite materials, the targets were immersed in deionized water and a polymeric solution of polyvinyl pyrrolidone (PVP) under Nd:YAG laser pulses irradiation. Linear and nonlinear properties of these NPs were studied by optical spectroscopy and the Z-scan technique. Furthermore, tunable nonlinear properties of the NPs were measured under an external electric field under illumination to investigate the piezophotonic effect. Our results show that, at the interface of PZT and Au, due to the Schottky barrier, we have electron/hole recombination prevention, which leads to efficient enhancement in the nonlinear properties.

Influence of Laser Fluence on Structural and Ferroelectric Properties of Lead-Zirconate-Titanate Thin Films Prepared by Laser Ablation

1991 ◽  
Vol 30 (Part 1, No. 9B) ◽  
pp. 2167-2169 ◽  
Author(s):  
Hideo Kidoh ◽  
Toshio Ogawa ◽  
Hideyuki Yashima ◽  
Akiharu Morimoto ◽  
Tatsuo Shimizu
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Lead Zirconate Titanate ◽  
Laser Fluence ◽  
Ferroelectric Properties ◽  
Lead Zirconate ◽  
Zirconate Titanate
Sign in / Sign up

Export Citation Format

Share Document