Vertical morphotropic phase boundary in lead-free piezoelectric ceramics (K,Na,Li)NbO3-BaZrO3-(La,Na)TiO3 system

被引：12

作者：

Baba, Ryosuke ^{[1
]}

Karaki, Tomoaki ^{[1
]}

Fujii, Tadashi ^{[1
]}

机构：

[1] Toyama Prefectural Univ, Dept Intelligent Syst Design Engn, Imizu, Toyama 9390398, Japan

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2016年 / 6卷 / 02期

关键词：

Lead-free piezoceramics; vertical morphotropic phase boundary; reducing atmosphere; high-temperature XRD; phase transition;

D O I：

10.1142/S2010135X16500089

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A morphotropic phase boundary (MPB) with temperature-independent behavior, the so-called vertical MPB was investigated in lead-free (K,Na,Li)NbO3-BaZrO3-(La,Na)TiO3 ternary ceramic system. The specimens were synthesized by a conventional solid-state reaction method, and their crystal structures as well as their MPB were determined from X-ray diffraction patterns measured from room temperature to 300 degrees C. The vertical MPB composition was determined to be 0.9025(K0.45Na0.5Li0.05)NbO3-0.09BaZrO(3)- 0.0075(La,Na)TiO3 and the Curie temperature was found to be about 195 degrees C. It was successfully confirmed that ceramic samples of this system could be sintered in a reducing atmosphere. For lead-free piezoceramic applications of multilayer actuators using Ni inner electrodes, the results obtained in this work have important practical implications.

引用

页数：4

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