(001)-, (1110), and (105)- oriented SrBi4Ti4O 15 films with its c-axis tilted 0, 45 and 55° from the surface normal were epitaxially grown by metal organic chemical vapor deposition and the temperature dependency of the dielectric constant was systematically investigated. Relative dielectric constant, ∈r, and its temperature dependency increased when the tilting angle of the c-axis from the substrate surface normal increased. Temperature dependency of ∈r was positive in case of the (105) and (1110) orientation, which is in good agreement with the conventional ferroelectric materials. On the other hand, it became negative for (001) orientation. This shows the orientation dependency of ∈r in SrBi4Ti4O15.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering