A1 Refereed original research article in a scientific journal
Laser deposition of thin films from La0.7Ca0.3MnO3 targets prepared by sol-gel and solid-state methods
Authors: Huhtinen H, Raittila J, Paturi P, Salminen J, Zakhvalinskii VS
Publisher: IOP PUBLISHING LTD
Publication year: 2002
Journal:: Journal of Physics: Condensed Matter
Journal name in source: JOURNAL OF PHYSICS-CONDENSED MATTER
Journal acronym: J PHYS-CONDENS MAT
Volume: 14
Issue: 30
First page : 7165
Last page: 7176
Number of pages: 12
ISSN: 0953-8984
DOI: https://doi.org/10.1088/0953-8984/14/30/307
Abstract
The sol-gel (SG) method is used to synthesize La0.7Ca0.3MnO3 natiopowders having mean particle thickness of 1.3 nm. Targets for pulsed laser deposition of thin films are made from this material and compared with targets sintered from micron-size powder prepared by a typical solid-state (SS) method. Emission line intensity ratios observed from the laser plume give evidence that the paths of atomic species deposited from the SS target are clearly longer. The sizes of the particles in the SG plume are smaller than in the SS plume and agree with the particle sizes in the corresponding targets. According to x-ray photoelectron spectroscopy the deposited films have on the surface some excess of Ca and deficiency in Mn. The composition of the films prepared from the SG target is closer to ideal than the composition of the films made from the SS target. The SG films have a steeper magnetic transition and smoother. surface than the SS films. Therefore the SG material is better suited for deposition of smooth thin films.
The sol-gel (SG) method is used to synthesize La0.7Ca0.3MnO3 natiopowders having mean particle thickness of 1.3 nm. Targets for pulsed laser deposition of thin films are made from this material and compared with targets sintered from micron-size powder prepared by a typical solid-state (SS) method. Emission line intensity ratios observed from the laser plume give evidence that the paths of atomic species deposited from the SS target are clearly longer. The sizes of the particles in the SG plume are smaller than in the SS plume and agree with the particle sizes in the corresponding targets. According to x-ray photoelectron spectroscopy the deposited films have on the surface some excess of Ca and deficiency in Mn. The composition of the films prepared from the SG target is closer to ideal than the composition of the films made from the SS target. The SG films have a steeper magnetic transition and smoother. surface than the SS films. Therefore the SG material is better suited for deposition of smooth thin films.
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