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Synthesis and characterization of Ba0.7Sr0.3TiO3, BaZr0.3Ti0.7O3 thin film heterostructures

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Abstract

The paper presents synthesis of Ba0.7Sr0.3TiO3 (BST), Ba0.7Sr0.3TiO3 (BZT) thin films and BZT/BST heterostructures using modified Pechini method. The La0.7Sr0.3MnO3 has been used as a conducting bottom layer to form metal ferroelectric metal capacitor. The thin films are spin coated on SiO2/n-Si (100) substrates. The thin films thus deposited are characterized for crystal structure, morphology, dielectric and complex impedance properties. The results show that BZT/BST heterostructures show reduced loss tangent tan δ and useful value of figure of merit γ in RF range of frequencies. The results on dielectric properties could be analyzed in terms of the Maxwell–Wagner Model and contribution due to superlattice effects.

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Acknowledgments

The author here by acknowledge with thanks the help rendered by Dr. V. Ganeshan, Asst. Director, UGC-DAE-CSR, Indore (Madhya Pradesh), India, Dr. P.S. Patil, Shivaji University Kolhapur and Dr. V. L. Mathe, Pune University, Pune for imaging using AFM and SEM respectively.

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Authors and Affiliations

  1. School of Physical Sciences, Solapur University, Solapur, Maharashtra, India

    A. N. Tarale, S. R. Jigajeni, D. J. Salunkhe & P. B. Joshi

  2. Department of Physics, Institute of Science, Mumbai, Maharashtra, India

    S. B. Kulkarni

  3. UGC-DAE-CSR, Indore, Madhya Pradesh, India

    D. M. Phase & R. J. Chaudhary

  4. UGC-DAE-CSR, Mumbai, Maharashtra, India

    S. K. Deshapande

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  1. A. N. Tarale
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  2. S. R. Jigajeni
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  3. D. J. Salunkhe
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  4. P. B. Joshi
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  5. S. B. Kulkarni
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  6. D. M. Phase
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Correspondence to P. B. Joshi.

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Tarale, A.N., Jigajeni, S.R., Salunkhe, D.J. et al. Synthesis and characterization of Ba0.7Sr0.3TiO3, BaZr0.3Ti0.7O3 thin film heterostructures. J Mater Sci: Mater Electron 23, 557–566 (2012). https://doi.org/10.1007/s10854-011-0436-4

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  • DOI: https://doi.org/10.1007/s10854-011-0436-4

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