Effects of Ambient Pressure on the Structural and Magnetic Properties of Bismuth Ferrite Nanoparticles Prepared by Pulsed Laser Deposition (PLD)

2012 ◽  
Vol 722 ◽  
pp. 53-60
Author(s):  
Ying Bang Yao ◽  
Bei Zhang ◽  
Long Chen ◽  
Yang Yang
Keyword(s):  
Magnetic Properties ◽  
Pulsed Laser Deposition ◽  
Ambient Pressure ◽  
Bismuth Ferrite ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Ferromagnetic Behavior ◽  
Deposition Pressure ◽  
Si Substrates ◽  
Ambient Oxygen

Nanoparticles of bismuth ferrite (BiFeO3) were fabricated by high-pressure pulsed laser deposition method (PLD) on Pt-coated Si substrates. Effects of the ambient oxygen pressure during deposition (from 1 Torr to 15 Torr) were studied with respect to the microstructures and magnetic properties of the samples. It was found that as the pressure is higher than 5 Torr isolated nanoparticles are formed and the size of these nanoparticles decreases with the deposition pressure. All the nanoparticles exhibit ferromagnetic behavior and the magnetic coercive filed decreases with the particle size.

Pulsed Laser Deposition of Epitaxial SrVO3 Films on (100)LaAlO3 and (100)Si

2000 ◽  
Vol 623 ◽  
Author(s):  
P.W. Yip ◽  
K.H. Wong
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Growth Conditions ◽  
Spectroscopic Studies ◽  
Laser Deposition ◽  
X Ray ◽  
Si Substrates ◽  
Post Annealing ◽  
Ambient Oxygen ◽  
Relationship Of

AbstractThin films of SrVO3 have been grown on (100)LaAlO3 and TiN buffered (100)Si substrates by pulsed laser deposition. The films were deposited in temperature range of 450°C – 750°C and under ambient oxygen pressure between 101−6 and 101−2 Torr. Their structural properties were characterized using a four-circle x-ray diffractometer. High quality SrVO3 films were obtained at growth temperatures above 500°C without post annealing. Heteroepitaxial relationship of < 100 >SrVo3 ∥ < 100 >LaAOl3 and <100>SrVo3∥ < 100 >TiN ∥ < 100 >Si were observed for films deposited at ≤ 550°C. X-ray photoelectron spectroscopic studies of the films suggest that the vanadium is mainly tetravalent and pentavalent. Charge transport measurements show that the films vary from semiconducting to highly conducting for different growth conditions. Resistivity of a few micro-ohm cm was recorded for some of the epitaxial SrVO3 films.

The Influence of Deposition Pressure on the Incorporation of Target and Ambient Oxygen Into Laser Ablated Material

1993 ◽  
Vol 311 ◽  
Author(s):  
M. Zhu Tidrow ◽  
S.S. Tidrow ◽  
W.W. Wilber ◽  
R.R. Pfeffer
Keyword(s):  
Pulsed Laser Deposition ◽  
Film Growth ◽  
Pulsed Laser ◽  
Target Material ◽  
Laser Deposition ◽  
Chamber Pressure ◽  
Ambient Atmosphere ◽  
Deposition Pressure ◽  
Amorphous Films ◽  
Ambient Oxygen

ABSTRACTOxygen plays an essential role in the growth of a variety of oxides such as high-Tc superconductors, ferroelectrics, ferrites and dielectrics. The oxygen available for film growth during laser ablation can come from two sources: the target material and the ambient deposition atmosphere. The amount of oxygen incorporated from these two sources at room temperature has been investigated over a range of deposition pressures. Thiswas accomplished using 18O as a tracer during pulsed laser deposition of amorphous filmsfrom Cu and CuO targets. It was found that the total amount of oxygen incorporated by the amorphous films increases with chamber pressure up to approximately 35 mTorr. For pulsed laser deposition from the oxide target, the major fraction of the oxygen within the deposited material comes from the target. For the oxide target, the amount of oxygen incorporated from the ambient atmosphere is strongly pressure dependent with a maximum near 35 mTorr. These results are compared to earlier work with YBa2Cu3O7.

Synthesis and magnetic properties of manganite thin films on Si by polymer assisted (PAD) and pulsed laser deposition (PLD).

2012 ◽  
Vol 1449 ◽  
Author(s):  
J. M. Vila-Fungueiriño ◽  
B. Rivas-Murias ◽  
F. Rivadulla
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Magnetic Properties ◽  
Metal Ions ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Polycrystalline Films ◽  
Si Substrates ◽  
Optimized Conditions

ABSTRACTWe report the synthesis of polycrystalline films of La1-xCaxMnO3 in Si (111) by Polymer Assisted Deposition (PAD). An aqueous solution polyethyleneimine (PEI) and different metal ions stabilized with EDTA, was spin coated on hydrophilized Si substrates and subsequently annealed under different atmospheres. Homogeneous, dense polycrystalline films are obtained at optimized conditions of 950 ºC under flowing O2. The morphology and magnetic properties of the samples are compared with films obtained by Pulsed Laser Deposition.

Anisotropic magnetic properties of Zn1–xCoxO thin films grown by pulsed laser deposition

2006 ◽  
Vol 3 (4) ◽  
pp. 1126-1129
Author(s):  
J. W. Lee ◽  
S. Kuroda ◽  
S. Yamada ◽  
K. Takita
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition

Excimer pulsed laser deposition and annealing of YSZ nanometric films on Si substrates

2005 ◽  
Vol 248 (1-4) ◽  
pp. 270-275 ◽  
Author(s):  
A.P. Caricato ◽  
G. Barucca ◽  
A. Di Cristoforo ◽  
G. Leggieri ◽  
A. Luches ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Si Substrates

scholarly journals Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO-AgxAu1-x thin films

2021 ◽  
Author(s):  
Robynne Lynne PALDI ◽  
Xing Sun ◽  
Xin Li Phuah ◽  
Juanjuan Lu ◽  
Xinghang Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Deposition Method ◽  
Hybrid Films ◽  
Deposition Pressure ◽  
Plasmonic Metamaterials ◽  
Film Form

Self-assembled oxide-metallic alloyed nanopillars as hybrid plasmonic metamaterials (e.g., ZnO-AgxAu1-x) in a thin film form are grown using a pulsed laser deposition method. The hybrid films were demonstrated to be...

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