Effects of Li content on the phase structure and electrical properties of lead-free (K0.46-x/2 Na0.54-x/2Lix) (Nb 0.76Ta0.20Sb0.04)O3 ceramics

Yunfei Chang; Zupei Yang; Yuting Hou; Zonghuai Liu; Zenglin Wang

doi:10.1063/1.2746411

Effects of Li content on the phase structure and electrical properties of lead-free (K_0.46-x/2 Na_0.54-x/2Li_x) (Nb _0.76Ta_0.20Sb_0.04)O₃ ceramics

Yunfei Chang, Zupei Yang, Yuting Hou, Zonghuai Liu, Zenglin Wang

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

Lead-free (K0.46-x2 Na0.54-x2 Lix) (Nb0.76 Ta0.20 Sb0.04) O3 piezoelectric ceramics were prepared by the conventional solid state sintering method without cold-isostatic pressing process. The x-ray diffraction and Raman scattering results show that the phase structure of the ceramics undergoes a transition from pseudocubic to tetragonal phase with increasing x from 0 to 0.10. Significantly enhanced electrical properties (d33 =259 pCN, kp =0.42, εr =1653, and tan δ=0.027) were obtained in the ceramics with x=0.04 near the morphotropic phase boundary, and only the tetragonal-cubic phase transition was observed above the room temperature in the εr -T curve. The temperature stability of the ceramics with x=0.04 was also investigated.

Original language	English (US)
Article number	232905
Journal	Applied Physics Letters
Volume	90
Issue number	23
DOIs	https://doi.org/10.1063/1.2746411
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2746411

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@article{59374060283c43828769e461fceddd55,

title = "Effects of Li content on the phase structure and electrical properties of lead-free (K0.46-x/2 Na0.54-x/2Lix) (Nb 0.76Ta0.20Sb0.04)O3 ceramics",

abstract = "Lead-free (K0.46-x2 Na0.54-x2 Lix) (Nb0.76 Ta0.20 Sb0.04) O3 piezoelectric ceramics were prepared by the conventional solid state sintering method without cold-isostatic pressing process. The x-ray diffraction and Raman scattering results show that the phase structure of the ceramics undergoes a transition from pseudocubic to tetragonal phase with increasing x from 0 to 0.10. Significantly enhanced electrical properties (d33 =259 pCN, kp =0.42, εr =1653, and tan δ=0.027) were obtained in the ceramics with x=0.04 near the morphotropic phase boundary, and only the tetragonal-cubic phase transition was observed above the room temperature in the εr -T curve. The temperature stability of the ceramics with x=0.04 was also investigated.",

author = "Yunfei Chang and Zupei Yang and Yuting Hou and Zonghuai Liu and Zenglin Wang",

year = "2007",

doi = "10.1063/1.2746411",

language = "English (US)",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "23",

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TY - JOUR

T1 - Effects of Li content on the phase structure and electrical properties of lead-free (K0.46-x/2 Na0.54-x/2Lix) (Nb 0.76Ta0.20Sb0.04)O3 ceramics

AU - Chang, Yunfei

AU - Yang, Zupei

AU - Hou, Yuting

AU - Liu, Zonghuai

AU - Wang, Zenglin

PY - 2007

Y1 - 2007

N2 - Lead-free (K0.46-x2 Na0.54-x2 Lix) (Nb0.76 Ta0.20 Sb0.04) O3 piezoelectric ceramics were prepared by the conventional solid state sintering method without cold-isostatic pressing process. The x-ray diffraction and Raman scattering results show that the phase structure of the ceramics undergoes a transition from pseudocubic to tetragonal phase with increasing x from 0 to 0.10. Significantly enhanced electrical properties (d33 =259 pCN, kp =0.42, εr =1653, and tan δ=0.027) were obtained in the ceramics with x=0.04 near the morphotropic phase boundary, and only the tetragonal-cubic phase transition was observed above the room temperature in the εr -T curve. The temperature stability of the ceramics with x=0.04 was also investigated.

AB - Lead-free (K0.46-x2 Na0.54-x2 Lix) (Nb0.76 Ta0.20 Sb0.04) O3 piezoelectric ceramics were prepared by the conventional solid state sintering method without cold-isostatic pressing process. The x-ray diffraction and Raman scattering results show that the phase structure of the ceramics undergoes a transition from pseudocubic to tetragonal phase with increasing x from 0 to 0.10. Significantly enhanced electrical properties (d33 =259 pCN, kp =0.42, εr =1653, and tan δ=0.027) were obtained in the ceramics with x=0.04 near the morphotropic phase boundary, and only the tetragonal-cubic phase transition was observed above the room temperature in the εr -T curve. The temperature stability of the ceramics with x=0.04 was also investigated.

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DO - 10.1063/1.2746411

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JF - Applied Physics Letters

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ER -

Effects of Li content on the phase structure and electrical properties of lead-free (K_0.46-x/2 Na_0.54-x/2Li_x) (Nb _0.76Ta_0.20Sb_0.04)O₃ ceramics

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