1. Electronic Properties of Ceramic Films
Tim Jurasevich
Advisor: Dr. Kvam

2. Outline
Background Info
Goals
Procedure
Results
Conclusions

3. Perovskites ABO3 Middle atom can move Cubic above Curie temperature
Structure changes below Curie temperature
Permanent dipole

4. Conductive Metal Oxides
Middle atom won’t move
Not capacitive
Ferroelectric Fatigue

5. SrRuO3
Orthorhombic
a = 5.57 Å
b = 7.86 Å
c = 5.54 Å
Nearly Tetragonal

6. LaNiO3
Rhombohedral
a = 5.45 Å
Low degree of tilt
Nearly Cubic

7. Research Goals
Create Strontium Ruthenate (SrRuO3) and Lanthanum Nickelate (LaNiO3) thin films
Sol-gel process
Refine process
Investigate properties of the thin films

8. Sol-gel process SrRuO3 sol-gel Black More black LaNiO3 sol-gel
RuCl3
Ethanol
Water
SrAc2
H2O2
Black
More black
LaNiO3 sol-gel
La(NO3)3
2-methoxyethanol
MEA
NiAc2
Dark Blue

9. Sol-gel process Spin coated Annealed SrRuO3 on Silicon LaNiO3 on Glass
800°C
700°C

10. Visual Inspection

11. Sputtering Platinum
Platinum stripes sputtered along the edges and in the middle
Lots of platinum required for good electrode

12. Optical Microscopy

13. X-Ray Diffraction

14. X-Ray Diffraction

15. X-Ray Diffraction

16. Resistivity SrRuO3 LaNiO3 ρ = 350 µΩ∙cm Ideal: 300 µΩ∙cm ρ = 700 µΩ∙cm

17. Conclusions SrRuO3 and LaNiO3 can be prepared by sol-gel methods
Both thin films exhibit fairly low resistivities
Process variations affect crystallographic texture

18. Thank You
Questions?
Comments?