c‐axis oriented ferroelectric thin films of PbTiO3 on Si by pulsed laser ablation

1996 ◽  
Vol 68 (11) ◽  
pp. 1582-1584 ◽  
Author(s):  
V. R. Palkar ◽  
S. C. Purandare ◽  
S. P. Pai ◽  
S. Chattopadhyay ◽  
P. R. Apte ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Ferroelectric Thin Films

Investigation of the Characteristics of Ferroelectric Thin Films Deposited by Pulsed Laser Ablation

1994 ◽  
Vol 361 ◽  
Author(s):  
S. Sengupta ◽  
D.P. Vijay ◽  
S.B. Desu
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Oxygen Pressure ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Secondary Phase ◽  
Ferroelectric Thin Films ◽  
Laser Ablation Method ◽  
Target Composition ◽  
Lower Oxygen

ABSTRACTFerroelectric thin films of barium strontium titanate (BSTO) have been deposited on bare and metallized substrates by pulsed laser ablation method under different oxygen ambients (150 mT and 50 mT). Under an oxygen pressure of 150 mT, the film composition was similar to that of its ablation target composition, viz. Ba0.4TiO3. However, when the films were deposited under the lower oxygen pressure, x-ray diffraction studies showed the presence of a secondary phase. The electrical characteristics of the films were measured to examine the effect of the stoichiometry on the dielectric constant and tunability. The results of this study will be presented.

C-Axis Oriented Ferroelectric thin Films of PbtiO3 on Silicon Substrate by Pulsed Laser Ablation

1995 ◽  
Vol 397 ◽  
Author(s):  
V. R. Palkar ◽  
S. C. Purandare ◽  
S. P. Pai ◽  
S. Chattopadhyay ◽  
P. R. Apte ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Single Phase ◽  
Ferroelectric Properties ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Film Deposition ◽  
Ferroelectric Thin Films ◽  
Laser Deposition ◽  
Deposition Conditions

ABSTRACTWe are reporting the successful deposition of single phase c-axis oriented ferroelectric thin films of PbTiO3 on Si (100) by pulsed laser deposition. It is shown that the formation of non ferroelectric Pb2Ti2O6 phase at the interface could be avoided by raising the substrate temperature sufficiently high. The film deposition conditions are optimized so as to achieve better ferroelectric properties.

Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

1991 ◽  
Vol 49 ◽  
pp. 1068-1069
Author(s):  
M. Grant Norton ◽  
C. Barry Carter
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Laser Ablation ◽  
Substrate Surface ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Laser Ablation Process ◽  
Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

ZnS thin films grown on Si(100) by XeCl pulsed laser ablation

2001 ◽  
Vol 177 (1-2) ◽  
pp. 73-77 ◽  
Author(s):  
K.T Hillie ◽  
C Curren ◽  
H.C Swart
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

Nano-ionic thin films of gadolinia-doped ceria prepared by pulsed laser ablation

Ionics ◽  
2007 ◽  
Vol 13 (5) ◽  
pp. 343-348 ◽  
Author(s):  
P. Kuppusami ◽  
K. Muthukkumaran ◽  
R. Divakar ◽  
R. Kesavamoorthy ◽  
E. Mohandas ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Doped Ceria
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