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arXiv · 0902.1572

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

N. D. Orloff·W. Tian·C. J. Fennie·C. -H. Lee·D. Gu·J. Mateu·X. X. Xi·K. M. Rabe·D. G. Schlom·I. Takeuchi·J. C. Booth
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Abstract

We explore the frequency-dependent relative 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 were used to extract the frequency response from 500 Hz to 40 GHz. At room temperature, the in-plane relative 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, permittivity increases and electric field tunability develops in Sr(4)Ti(3)O(10).

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N. D. Orloff, W. Tian, C. J. Fennie, C. -H. Lee, D. Gu, J. Mateu, X. X. Xi, K. M. Rabe, D. G. Schlom, I. Takeuchi, J. C. Booth. 2009-02-10. Broadband Dielectric Spectroscopy of Ruddlesden-Popper Sr$_{n+1}$Ti$_{n}$O$_{3n+1}$ ($n$ = 1, 2, 3) Thin Films. https://doi.org/10.1063/1.3046792

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