Tunability and leakage currents of (Ba,Sr)TiO3 ferroelectric ceramics with various additives

被引：20

作者：

Dedyk, A. I.

Nenasheva, E. A.

Kanareykin, A. D.

Pavlova, Ju. V.

Sinjukova, O. V.

Karmanenko, S. F. ^{[1
]}

机构：

[1] Electrochem Univ, St Petersburg 197376, Russia

[2] GIRICOND Res Inst, St Petersburg 194223, Russia

[3] Euclid Tec Labs LLC, Solon, OH 44139 USA

来源：

JOURNAL OF ELECTROCERAMICS | 2006年 / 17卷 / 2-4期

关键词：

ferroelectric ceramics; BST; magnesium additives; tunability; dielectric loss factor;

D O I：

10.1007/s10832-006-0466-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The BaxSr1 - x TiO3 ferroelectric ceramics with magnesium (BSM) and neodymium (BSN) additives were studied. Measurements were made of tunability, dielectric losses (tan delta), leakage currents, the correlations between current-voltage I(U) and capacitance-voltage C(U) characteristics. I(U) characteristics of high quality BSM ceramics have four regions: Ohmic, where the conductivity is linear; the horizontal region (or negative differential resistivity); the exponential dependence; and the vertical current enhancement. These BSM samples (similar to 20% Mg additives) were distinguished by highest breakdown strength (more than 1000 V), low tan delta (less than 10(-3) at 1 MHz) and high tunability (up to 10% at E (max) similar to 2 V/mu m).

引用

页码：433 / 437

页数：5

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