Electroless deposition of LaMnO[sub 3] perovskite film on yttria stabilized zirconia substrate

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1213· OSTI ID:5629924

Sasaki, Takeshi; Matsumoto, Yasumichi; Hombo, Jukichi ^[1]; Nagata, Masanori ^[2]

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1. Kumamoto Univ. (Japan)
2. Kumamoto Industrial Research Inst. (Japan)

Electroless deposition of LaMnO[sub 3] precursors on YSZ substrate from a solution containing Mn[sup 2+], La[sup 3+], and an oxidizing agent was investigated. Peroxydisulfate was used as the oxidizing agent. Pretreatment of the substrate, sensitization in a solution of SnCl[sub 2], and activation in a solution of PdCl[sub 2] were necessary for deposition of the oxide film. The La/Mn atomic ratio in the oxide film increased with increases in the [La[sup 3+]]/[Mn[sup 2+]] ratio and in the pH of the solution. The additives CH[sub 3]COONa and AgNO[sub 3] in the solution improved the incorporation of La[sup 3+] ion into the oxide film during the electroless deposition and the adhesion of the as-deposited oxide film on YSZ. It was judged from the cyclic voltammetry of the as-deposited oxide film and from XPS, IR and XRD measurements that the as-deposited oxide film on YSZ was amorphous hydrous MnO[sub 2] which contained La[sup 3+] ions by specific adsorption. La[sup 3+] ions existed in a state similar to that in La[sub 2]O[sub 3], according to an XPS measurement. La[sub 1[minus]x]MnO[sub 3] perovskite film (x = 0.85, 0.96) was prepared by heat treatment of the deposited oxide film at 800[degrees]C for 5 hr. The mechanism of the electroless deposition of the LaMnO[sub 3] precursor is discussed. 12 refs., 9 figs.

• OSTI ID: 5629924
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 105:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LANTHANUM OXIDES
DEPOSITION
MANGANESE OXIDES
ABSORPTION SPECTROSCOPY
ADSORPTION
AMORPHOUS STATE
ANNEALING
CATIONS
FILMS
OXIDATION
PEROVSKITES
PH VALUE
PHOTOELECTRON SPECTROSCOPY
STOICHIOMETRY
VOLTAMETRY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
YTTRIUM OXIDES
ZIRCONIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COHERENT SCATTERING
DIFFRACTION
ELECTRON SPECTROSCOPY
HEAT TREATMENTS
IONS
LANTHANUM COMPOUNDS
MANGANESE COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SCATTERING
SORPTION
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies