Colossal dielectric constant up to gigahertz at room temperature

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S. Krohns, P. Lunkenheimer, Ch. Kant, A.V. Pronin, H.B. Brom, A.A. Nugroho, M. Diantoro, A. Loidl

2009 Applied Physics Letters Vol. 94 Issue 12 Article Cited by 192 SDG 17SDG 7 Quartile

Abstract

The applicability of recently discovered materials with extremely high ("colossal") dielectric constants, required for future electronics, suffers from the fact that their dielectric constant ε′ only is huge in a limited frequency range below about 1 MHz. In the present report, we show that the dielectric properties of a charge-ordered nickelate, La15/8 Sr1/8 NiO4, surpass those of other materials. Especially, ε′ retains its colossal magnitude of >10 000 well into the gigahertz range. © 2009 American Institute of Physics.

Affiliations

Experimental Physics v, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany; Forschungszentrum Dresden-Rossendorf (FZD), RAS Hochfeld-Magnetlabor Dresden (HLD), 01314 Dresden, Germany; A. M. Prokhorov Institute of General Physics, 119991 Moscow, Russian Federation; Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, P.O. Box 9504, Netherlands; Department of Physics, Bandung Institute of Technology, Bandung 40132, Jl. Ganesha 10, Indonesia; Department of Physics, State University of Malang, Malang 65145, Jl. Surabaya 6, Indonesia

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