Elastic response of (1-x)Ba(Ti0.8Zr0.2)O3 - x(Ba0.7Ca0.3)TiO3 (x=0.45-0.55) and the role of the intermediate orthorhombic phase in enhancing the piezoelectric coupling

被引：67

作者：

Cordero, F. ^{[1
]}

Craciun, F. ^{[1
]}

Dinescu, M. ^{[2
]}

Scarisoreanu, N. ^{[2
]}

Galassi, C. ^{[3
]}

Schranz, W. ^{[4
]}

Soprunyuk, V. ^{[4
]}

机构：

[1] CNR ISC, Ist Sistemi Complessi, Area Ric Roma Tor Vergata, I-00133 Rome, Italy

[2] Natl Inst Lasers Plasma & Radiat Phys, Magurele 077125, Romania

[3] CNR ISTEC, Ist Sci & Tecnol Mat Ceram, I-48018 Faenza, Italy

[4] Univ Vienna, Fac Phys, A-1090 Vienna, Austria

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 23期

基金：

奥地利科学基金会;

关键词：

FERROELECTRICS; TRANSITIONS; TEMPERATURE; BOUNDARIES; DIAGRAM;

D O I：

10.1063/1.4903807

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The elastic response of (Ba,Ca)(Ti, Zr)O-3 at compositions where the piezoelectric effect is maximized has been measured by different methods between 1 Hz and 250 kHz and compared with that of PZT at the middle of its morphotropic phase boundary. In all cases, the compliance is peaked at the border between the tetragonal (T) and the orthorhombic (O) phases, intermediate between the T and the low- temperature rhombohedral phase. The anomalies do not exhibit dependence on frequency and their relative amplitude is 200- 300 times larger than the losses, demonstrating that they are intrinsic rather than due to the domain wall motion. This also demonstrates the role of an intermediate O or monoclinic phase in enhancing the transverse instability and piezoelectric coupling at a (morphotropic) phase boundary between R and T phases. (C) 2014 AIP Publishing LLC.

引用

页数：5

共 28 条

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