Characterization of BaTiO3 Thin Films Deposited by Pulsed-Laser Ablation

AbstractThin films of barium titanate (BaTiOs) have been deposited by pulsed-laser ablation onto (001)-oriented MgO substrates. The films were epitactic as evidenced by both x-ray diffraction and ion-channeling techniques. The film surface appeared smooth and contained a low density of particulates. This latter feature is believed to be due to the formation of target pellets having a very high density.

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X-ray absorption and magnetic circular dichroism characterization of Mo1–xFexO2 (x = 0–0.05) thin films grown by pulsed laser ablation

HFI / NQI 2010 ◽

10.1007/978-94-007-1269-0_18 ◽

2010 ◽

pp. 95-100

Author(s):

P. Thakur ◽

J. C. Cezar ◽

N. B. Brookes ◽

R. J. Choudhary ◽

D. M. Phase ◽

...

Keyword(s):

Thin Films ◽

Circular Dichroism ◽

Laser Ablation ◽

Magnetic Circular Dichroism ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

X Ray ◽

X Ray Absorption ◽

Circular Dichroïsm

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X-ray absorption and magnetic circular dichroism characterization of Mo1–xFexO2 (x = 0–0.05) thin films grown by pulsed laser ablation

Hyperfine Interactions ◽

10.1007/s10751-010-0247-7 ◽

2010 ◽

Vol 197 (1-3) ◽

pp. 95-100 ◽

Cited By ~ 3

Author(s):

P. Thakur ◽

J. C. Cezar ◽

N. B. Brookes ◽

R. J. Choudhary ◽

D. M. Phase ◽

...

Keyword(s):

Thin Films ◽

Circular Dichroism ◽

Laser Ablation ◽

Magnetic Circular Dichroism ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

X Ray ◽

X Ray Absorption ◽

Circular Dichroïsm

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Thin Films of SrFeO2.5+x - Effect of Preferred Orientation on Oxygen Uptake

MRS Proceedings ◽

10.1557/proc-343-463 ◽

1994 ◽

Vol 343 ◽

Cited By ~ 3

Author(s):

Brian W. Sanders ◽

Jianhua Yao ◽

Michael L. Post

Keyword(s):

Thin Films ◽

Laser Ablation ◽

Oxygen Uptake ◽

Growth Temperature ◽

Deposition Temperature ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

X Ray Diffraction ◽

X Ray ◽

Oriented Films

ABSTRACTPulsed laser ablation has been used to deposit thin films of SrFeO25+x (x = 0 to ≈0.5). Previous work has shown that the orientation of the films, determined by powder x-ray diffraction depended strongly upon the deposition temperature. Films grown below 770 K showed little or no orientation. A growth temperature of 900 K resulted in films oriented (200). Growth temperatures of > 1000 K produced films oriented predominantly (110). At 673 K in an oxygen atmosphere, oriented films readily converted from the oxygen deficient brownmillerite form (x=0) to the oxygen rich cubic (or distorted cubic) perovskite form (x≈0.3). Films which exhibited no initial orientation did not react with oxygen under these conditions. Cycling non-oriented films between 230 and 800 ppm of oxygen in 101.3 kPa of nitrogen at 673 K resulted in weak (110) orientation. Once oriented, the films reacted readily with oxygen and exhibited measurable resistance changes. The conversion from oxygen deficient to oxygen rich form was monitored by x-ray diffraction and the DC resistance of the films.

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Preparation and Characterization of Tellurium Nano-Particles by Long Pulsed Laser Ablation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.214.202 ◽

2011 ◽

Vol 214 ◽

pp. 202-206 ◽

Cited By ~ 1

Author(s):

Wuttichai Phae-Ngam ◽

Voravit Kosalathip ◽

T. Kumpeerapun ◽

Pichet Limsuwan ◽

A. Dauscher

Keyword(s):

Laser Ablation ◽

High Speed ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Nano Particles ◽

Crystallographic Structure ◽

X Ray Diffraction ◽

X Ray ◽

Moving Speed

A long pulsed laser ablation with a moving target at high speed technique was applied to prepare tellurium nanoparticles from a tellurium target under argon gas at atmospheric pressure. The prepared nanoparticles were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), and X-ray diffraction (XRD). The influence of the moving speed of the target on the size, morphology and crystallographic structure of the nanoparticles was investigeated. The results show that for the target moving at high speed without burning of the target the production of isolated nanoparticles is obtained. The diameter of the nanoparticles is ranging from 30 to 200 nm.

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Synthesis of thin films of polycrystalline ferroelectric BiNbO4 on Si by pulsed laser ablation

Journal of Materials Research ◽

10.1557/jmr.1998.0155 ◽

1998 ◽

Vol 13 (5) ◽

pp. 1113-1116 ◽

Cited By ~ 6

Author(s):

Soma Chattopadhyay ◽

Pushan Ayyub ◽

R. Pinto ◽

M. S. Multani

Keyword(s):

Thin Films ◽

Laser Ablation ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

X Ray Diffraction ◽

X Ray ◽

Force Microscopy ◽

Atomic Force ◽

Polycrystalline Thin Films ◽

Ambient Oxygen

The stibiotantalite (ABO4) family includes a number of ferroelectrics and antiferroelectrics with excellent potential for applications. We report the deposition of phase-pure, polycrystalline thin films of BiNbO4 on Si(100) substrates using pulsed laser ablation. The deposition conditions were optimized with respect to substrate temperature, laser parameters, and the ambient oxygen pressure. The films were characterized by x-ray diffraction, energy dispersive x-ray analysis, and Raman spectroscopy, while their microstructure was studied by atomic force microscopy and scanning electron microscopy. Dielectric hysteresis studies indicated that films with a thickness below ≈250 nm are ferroelectric, while thicker ones are antiferroelectric.

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