Ultrafine metal oxide particle dispersion liquid and ultrafine metal oxide particle thin film

Abstract

An ultrafine metal oxide particle dispersion liquid is prepared by mixing an ultrafine titanium-based composite metal oxide particle dispersion liquid prepared by hydrolysis in a microemulsion containing a hydrophobic dispersion medium, water, and a surfactant and an organic metal compound solution for the same titanium-based composite metal oxide at a ratio of 1:1 to 1:30 in terms of the composite metal oxide contained.

1 - 4 . (canceled)  
     
     
         5 . An ultrafine metal oxide particle dispersion liquid repared by mixing an ultrafine titanium-based composite metal oxide particle dispersion liquid prepared by hydrolysis in a microemulsion comprising a hydrophobic dispersion medium, water, and a surfactant and an organic metal compound solution for the same titanium-based composite metal oxide at a ratio of 1:1 to 1:30 in terms of the composite metal oxide contained.  
     
     
         6 . The ultrafine metal oxide particle dispersion liquid according to  claim 5 , wherein the concentration of the surfactant in the ultrafine titanium-based composite metal oxide particle dispersion liquid is 10% or less by volume of the hydrophobic dispersion medium; and the concentration of the ultrafine titanium-based composite metal oxide particles is 0.05 mol/l or less in terms of the composite metal oxide.  
     
     
         7 . The ultrafine metal oxide particle dispersion liquid according to  claim 6 , wherein the titanium-based composite metal oxide is a perovskite oxide represented by MTiO 3 , wherein M indicates at least one metal element selected from the group consisting of barium, calcium, and strontium.  
     
     
         8 . The ultrafine metal oxide particle dispersion liquid according to  claim 5 , wherein the titanium-based composite metal oxide is a perovskite oxide represented by MTiO 3 , wherein M indicates at least one metal element selected from the group consisting of barium, calcium, and strontium.  
     
     
         9 . An ultrafine metal oxide particle thin film produced with the ultrafine metal oxide particle dispersion liquid according to  claim 8 .  
     
     
         10 . An ultrafine metal oxide particle thin film produced with the ultrafine metal oxide particle dispersion liquid according to  claim 7 .  
     
     
         11 . An ultrafine metal oxide particle thin film produced with the ultrafine metal oxide particle dispersion liquid according to  claim 6 .  
     
     
         12 . An ultrafine metal oxide particle thin film produced with the ultrafine metal oxide particle dispersion liquid according to  claim 5.