Exploiting dimensionality and defect mitigation to create tunable microwave dielectrics

0473530 - FZÚ 2017 RIV GB eng J - Journal Article
Lee, Ch.-H. - Orloff, N.D. - Birol, T. - Zhu, Y. - Goian, Veronica - Rocas, E. - Haislmaier, R. - Vlahos, E. - Mundy, J.A. - Kourkoutis, L.F. - Nie, Y. - Biegalski, M.D. - Zhang, J. - Bernhagen, M. - Benedek, N.A. - Kim, Y. - Brock, J.D. - Uecker, R. - Xi, X.X. - Gopalan, V. - Nuzhnyy, Dmitry - Kamba, Stanislav - Muller, D.A. - Takeuchi, I. - Booth, J.C. - Fennie, C.J. - Schlom, D. G.
Exploiting dimensionality and defect mitigation to create tunable microwave dielectrics.
Nature. Roč. 502, Oct (2013), s. 532-536. ISSN 0028-0836. E-ISSN 1476-4687
R&D Projects: GA MŠMT(CZ) LH13048
Keywords : microwave dielectrics * ferroelectrics * strain
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 42.351, year: 2013

We report the experimental realization of a highly tunable ground state arising from the emergence of a local ferroelectric instability in biaxially strained Srn+1TinO3n+1 phases with n > 3 at frequencies up to 120 GHz. In contrast to traditional methods of modifying ferroelectrics—doping or strain in this rather unique system an increase in the separation between the (SrO)2 planes bolsters the local ferroelectric instability. This new control parameter, n, can be exploited to achieve a figure of merit at room temperature that rivals all known tunable microwave dielectrics.
Permanent Link: http://hdl.handle.net/11104/0270666