Broadband Dielectric Spectroscopy of Ruddlesden-Popper Sr(n+1)Ti(n)O(3n+1) (n= 1, 2, 3) Thin Films

Published

January 29, 2009

Author(s)

Nathan D. Orloff, Ichiro Takeuchi, James C. Booth, Dazhen Gu, Jordi Mateu, C. J. Fennie, K. M. Rabe, W Tian, D.G. Schlom

Abstract

We explore the frequency dependent permittivity of Ruddlesden-Popper series Sr(n+1)Ti(n)O(3n+1) (n= 1, 2, 3) thin films as a function of temperature and dc electric-field. Interdigitated capacitors and coplanar waveguides are used to extract the frequency response from 500 Hz to 40 GHz. At room temperature, the permittivities obtained for Sr(n+1)Ti(n)O(3n+1) (n= 1, 2, 3) were 42+/-3, 54+/-3, and 77+/-2, respectively and were independent of frequency. At low temperatures the dielectric constant increases, and electric field tunability develops in Sr(4)Ti(3)O(10) . Loss tangent for the series members (n=1, 2, 3) were below our measurement sensitivity, but are less than 4% (0.04).

Citation

Applied Physics Letters

Volume

94

Issue

4

Pub Type

Journals

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DOI Link

Citation

Orloff, N. , Takeuchi, I. , Booth, J. , Gu, D. , Mateu, J. , Fennie, C. , Rabe, K. , Tian, W. and Schlom, D. (2009), Broadband Dielectric Spectroscopy of Ruddlesden-Popper Sr(n+1)Ti(n)O(3n+1) (n= 1, 2, 3) Thin Films, Applied Physics Letters, [online], https://doi.org/10.1063/1.3046792 (Accessed October 10, 2025)