A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Laser deposition of thin films from La0.7Ca0.3MnO3 targets prepared by sol-gel and solid-state methods
Tekijät: Huhtinen H, Raittila J, Paturi P, Salminen J, Zakhvalinskii VS
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2002
Lehti:: Journal of Physics: Condensed Matter
Tietokannassa oleva lehden nimi: JOURNAL OF PHYSICS-CONDENSED MATTER
Lehden akronyymi: J PHYS-CONDENS MAT
Vuosikerta: 14
Numero: 30
Aloitussivu: 7165
Lopetussivu: 7176
Sivujen määrä: 12
ISSN: 0953-8984
DOI: https://doi.org/10.1088/0953-8984/14/30/307
Tiivistelmä
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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