Title :
Tunable dielectric properties of lead strontium titanate thin films by sol-gel technique
Author :
Jain, M. ; Karan, N.K. ; Yoon, J. ; Wang, H. ; Katiyar, R.S. ; Jia, Q.X.
Author_Institution :
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, 87545 USA
Abstract :
For the applications in tunable microwave devices, thin films of a potential candidate material, PbxSr1-xTiO3 (with ??=0.3), were studied. To study dielectric proeprties in coplanar and metal-insulator-metal configuration, the PbxSr1-xTiO3 films were deposited on single crystalline LaAlO3 and conductive LaNiO3 coated LaAlO3 substrates using sol-gel technique. The film on LaAlO3 was highly c-axis oriented and epitaxial. At room temperature, dielectric tunability values as high as 18% (at 20kV/cm) and 70% (at 225kV/cm) were achieved for the Pb0.3Sr0.7TiO3 film on LaAlO3 and LaNiO3/LaAlO3, respectively.
Keywords :
Conducting materials; Conductive films; Crystalline materials; Dielectric substrates; Dielectric thin films; Lead; Microwave devices; Strontium; Thin film devices; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the
Conference_Location :
Santa Re, NM, USA
Print_ISBN :
978-1-4244-2744-4
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2008.4693842
