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- Title
Dielectric properties of sol-gel synthesized SrTiO/(BaSr)TiO and SrTiO/Ba(ZrTi)O thin film heterostructures.
- Authors
Tarale, A.; Sutar, M.; Salunkhe, D.; Joshi, P.; Kulkarni, S.; Pawar, R.; Lee, C.; Phase, D.; Gupta, M.; Chaudhary, R.
- Abstract
The paper presents synthesis of BaSrTiO (BST), BaZrTiO (BZT) and SrTiO (ST) thin films and their heterostructures using modified Pechini method. The LaSrMnO has been used as a conducting bottom layer to form metal ferroelectric metal capacitor. The thin films are spin coated on SiO/n-Si(100) substrates. The thin films thus deposited are characterized for crystal structure, morphology, dielectric, complex impedance and admittance properties. Deposition of surface layer ST is observed to reduce loss tangent tan δ of BST and BZT thin films, still maintaining equivalent magnitude of figure of merit γ. The results on dielectric properties are analyzed in terms of the Maxwell-Wagner model and Koop's phenomenological theory.
- Subjects
DIELECTRIC properties; HETEROSTRUCTURES; SUPERLATTICES; COLLOIDS; SOLID state electronics
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 4, p1308
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-012-0925-0