Solution Synthesis of Thin Films in the SnO2−In2O3System: A Case Study of the Mixing of Sol−Gel and Metal-Organic Solution Processes

2006 ◽  
Vol 18 (3) ◽  
pp. 840-846 ◽  
Author(s):  
Mauro Epifani ◽  
Raül Díaz ◽  
Jordi Arbiol ◽  
Pietro Siciliano ◽  
Joan R. Morante
1990 ◽  
Vol 200 ◽  
Author(s):  
Cheng-Chen Hsueh ◽  
Martha L. MeCartney

ABSTRACTFerroelectric PZT thin films were prepared by sol-gel methods and RF magnetron sputtering. Sputtered PZT fast fired at 650° for 30 minutes showed microporosity. For the sol-gel route, solution precursors had a significant effect on the microstructure of the crystalline PZT films. PZT thin films derived from metal-organic precursors dissolved in n-propanol were observed to have large and microporous spherulitic grains on the order of 2 μm and phase separation in acetic acid-catalyzed films. In contrast, PZT precursors originated from alcohol exchanges with 2-methoxyethanols resulted in dense films with fine grains of ∼0.2 μm and clear evidence of ferroelectric domains. The dense sol-gel films possessed superior dielectric and ferroelectric properties.


1995 ◽  
Vol 10 (9) ◽  
pp. 2166-2169 ◽  
Author(s):  
Y.Q. Li ◽  
J. Zhang ◽  
S. Pombrik ◽  
S. DiMascio ◽  
W. Stevens ◽  
...  

A large magnetoresistance change (ΔR/RH) of −550% has been observed at 270 K in (La0.8Ca0.2)MnO3 thin films. The films were prepared in situ on LaAlO3 substrates by single-liquid-source metal-organic chemical vapor deposition. M(thd)n (M = La, Ca, and Mn, and n = 2, 3) were dissolved together in an organic solution and used as precursors for the deposition of (La0.8Ca0.2)MnO3 thin films. Deposition was conducted at an oxygen partial pressure of 1.2 Torr and a substrate temperature ranging from 600 °C to 700 °C. The mechanism for the large magnetoresistance change in this manganese oxide is briefly discussed.


2015 ◽  
Vol 815 ◽  
pp. 89-93
Author(s):  
Yuan Yuan Zhang ◽  
Xiao Dong Tang ◽  
Gen Shui Wang ◽  
Xian Lin Dong

Highly (100)-oriented LaNiO3 (LNO) thin films were prepared on p-type Si (100) substrates by metal organic solution deposition (MOSD). The LNO thin films were driven by series precursor solutions with different ratio of acetic acid to deionized water (Raaw) and pH values. The dependences of viscosity, pH value and the thermal property of the gel-derived powders of the precursor solution on Raaw values were systematically investigated. AFM images showed that Raaw can dramatically influence the surface roughness. When Raaw changed from 7:1 to 1:1, the surface roughness decreased from 3.695 nm to 1.488 nm. The resistivities of all the films are less than 2.1×10-3Ω·cm. It shows that the precursor solution has strong effect on the microstructure of the thin films and relatively slight effect on the resistivity.


2006 ◽  
Vol 928 ◽  
Author(s):  
Christoph Peters ◽  
Matthias Bockmeyer ◽  
Reinhard Krüger ◽  
André Weber ◽  
Ellen Ivers-Tiffée

ABSTRACTVia metal organic deposition (MOD) sapphire substrates were multiple dip-coated with a molecular dispersive 8 mol% Y2O3 doped ZrO2 (8YSZ) sol to prepare dense, crack-free thin films. The thin films were consecutively exposed to a tempering program with several rapid thermal annealing (RTA) steps and a final dwell temperature between 500 °C and 1400 °C for 24 h. Grain growth, phase, stoichiometry and macroscopic density of the thin films were analyzed by XRD and SEM. Grain sizes ranged between a few nanometers in diameter at 500 °C and several hundreds of nanometers at 1400 °C.


2006 ◽  
Vol 131 (1-3) ◽  
pp. 235-241 ◽  
Author(s):  
Fabien Remondiere ◽  
Philippe Boullay ◽  
Jean-Pierre Mercurio

2014 ◽  
Vol 25 (7) ◽  
pp. 2939-2942
Author(s):  
Xu-Ping Wang ◽  
Bing Liu ◽  
Yuan-Yuan Zhang ◽  
Xian-Shun Lv ◽  
Yu-Guo Yang

1997 ◽  
Vol 495 ◽  
Author(s):  
Y. Shi ◽  
S. L. Blair ◽  
I. Yaroslavsky ◽  
R. H. Hill

ABSTRACTThe process for generating films of Ba0.5Sr0.5TiO3, and PbZr0.48Ti0.52O3 by photochemical deposition from metal-organic thin films has been investigated. Films have also been prepared by metal-organic and sol-gel deposition for comparison with the photochemical method. All three methods could produce crystalline films of the target materials. Studies of the heating of the amorphous films prepared by each of the methods indicated that similar crystalline films could be prepared by the different methods. Under some conditions the photochemical methods gave the highest degree of orientation of the crystalline films.


2004 ◽  
Vol 58 (5) ◽  
pp. 813-816 ◽  
Author(s):  
Yuehua Wang ◽  
Guoding Xu ◽  
Xuejin Zhang ◽  
Yan Feng ◽  
Weishi Tang ◽  
...  

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