Colossal dielectric constant up to gigahertz at room temperature

被引：181

作者：

Krohns, S. ^{[1
]}

Lunkenheimer, P. ^{[1
]}

Kant, Ch. ^{[1
]}

Pronin, A. V. ^{[2
,3
]}

Brom, H. B. ^{[4
]}

Nugroho, A. A. ^{[5
]}

Diantoro, M. ^{[6
]}

Loidl, A. ^{[1
]}

机构：

[1] Univ Augsburg, Ctr Elect Correlat & Magnetism, D-86159 Augsburg, Germany

[2] Forschungszentrum Dresden Rossendorf FZD, Hochfeld Magnetlabor Dresden HLD, D-01314 Dresden, Germany

[3] RAS, AM Prokhorov Inst Gen Phys, Moscow 119991, Russia

[4] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[5] Bandung Inst Technol, Dept Phys, Bandung 40132, Indonesia

[6] State Univ Malang, Dept Phys, Malang 65145, Indonesia

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 12期

关键词：

dielectric losses; dielectric relaxation; lanthanum compounds; permittivity; strontium compounds; CHARGE; CACU3TI4O12;

D O I：

10.1063/1.3105993

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The applicability of recently discovered materials with extremely high ("colossal") dielectric constants, required for future electronics, suffers from the fact that their dielectric constant epsilon(') 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, La(15/8)Sr(1/8)NiO(4), surpass those of other materials. Especially, epsilon(') retains its colossal magnitude of >10 000 well into the gigahertz range.

引用

页数：3

共 21 条

[1] CHARGE MODULATIONS IN LA2-XSRXNIO4+Y - ORDERING OF POLARONS [J].