Possibility of Cofiring a Nickel Inner Electrode in a (Na0.5K0.5)NbO3-LiF Piezoelectric Actuator

被引：42

作者：

Kobayashi, Keisuke ^{[1
]}

Doshida, Yutaka ^{[1
]}

Mizuno, Youichi ^{[1
]}

Randall, Clive A. ^{[2
]}

机构：

[1] Taiyo Yuden Co Ltd, R&D Lab, Mat R&D Dept, Takasaki, Gunma 3703347, Japan

[2] Penn State Univ, Mat Res Inst, Ctr Dielect Studies, University Pk, PA 16802 USA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 09期

关键词：

MULTILAYER CERAMIC CAPACITOR; DC-ELECTRICAL DEGRADATION; LEAD-FREE PIEZOCERAMICS; NI INTERNAL ELECTRODE; PZT; SYSTEM; PERFORMANCE;

D O I：

10.7567/JJAP.52.09KD07

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multilayer (Na0.5K0.5)NbO3 (NKN) ceramics are considered promising candidates for lead-free piezoelectric actuators. The possibility of cofiring a nickel inner electrode in an NKN-LiF ceramic was investigated by evaluating the electrical properties and microstructures. The fabricated Ni inner electrode multilayer actuator sintered in a reduced atmosphere exhibited comparable dielectric properties to those of bulk NKN ceramics. The electric-field-induced strain was approximately 210 pm/V. Analysis based on the Rayleigh model showed that the extrinsic non-180 degrees domain wall motion was suppressed in the multilayer structure. The microstructure of the NKN ceramic was not affected by cofiring with nickel, and the NKN/Ni interface was both compositionally and structurally sharp. These results imply that the NKN-LiF ceramic can be cofired with nickel without any deterioration of its properties. (C) 2013 The Japan Society of Applied Physics

引用

页数：5

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