Growth mechanism and enhanced electrical properties of K0.5Na0.5NbO3-based lead-free piezoelectric single crystals grown by a solid-state crystal growth method

Jie Yang; Qunbao Yang; Yongxiang Li; Yun Liu

doi:10.1016/j.jeurceramsoc.2015.11.002

Growth mechanism and enhanced electrical properties of K_0.5Na_0.5NbO₃-based lead-free piezoelectric single crystals grown by a solid-state crystal growth method

Jie Yang, Qunbao Yang, Yongxiang Li^*, Yun Liu

^*Corresponding author for this work

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

42 Citations (Scopus)

Abstract

(K_0.45Na_0.55)_0.94Li_0.06NbO₃ (KNLN) single crystals were grown by a solid-state crystal growth (SSCG) method. The effects of MnO₂ and crystal orientation of the seeds on the KNLN single crystal growth were investigated. It is found that liquid phase and interfacial reaction mechanisms affect the crystal growth for the SSCG. Using the <110>-oriented KTaO₃ crystal as seeds, prism-shaped KNLN-100xMnO₂ (x=0-0.02) single crystals with a dimension of ~10mm×10mm were successfully obtained. The electrical properties of such single crystals were affected with MnO₂ addition. The resultant <100>-oriented KNLN single crystals exhibit excellent piezoelectric performances: S_max=0.38% and d33*=995pm/V at E_max=38kV/cm, T_C=460°C, superior to other KNN-based piezoceramics even exceed lead-based ceramics. This work indicates that the SSCG is a practicable approach to prepare high-performance KNLN lead-free piezoelectric single crystals.

Original language	English
Pages (from-to)	541-550
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	36
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2015.11.002
Publication status	Published - 1 Feb 2016

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10.1016/j.jeurceramsoc.2015.11.002

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title = "Growth mechanism and enhanced electrical properties of K0.5Na0.5NbO3-based lead-free piezoelectric single crystals grown by a solid-state crystal growth method",

abstract = "(K0.45Na0.55)0.94Li0.06NbO3 (KNLN) single crystals were grown by a solid-state crystal growth (SSCG) method. The effects of MnO2 and crystal orientation of the seeds on the KNLN single crystal growth were investigated. It is found that liquid phase and interfacial reaction mechanisms affect the crystal growth for the SSCG. Using the <110>-oriented KTaO3 crystal as seeds, prism-shaped KNLN-100xMnO2 (x=0-0.02) single crystals with a dimension of ~10mm×10mm were successfully obtained. The electrical properties of such single crystals were affected with MnO2 addition. The resultant <100>-oriented KNLN single crystals exhibit excellent piezoelectric performances: Smax=0.38% and d33*=995pm/V at Emax=38kV/cm, TC=460°C, superior to other KNN-based piezoceramics even exceed lead-based ceramics. This work indicates that the SSCG is a practicable approach to prepare high-performance KNLN lead-free piezoelectric single crystals.",

keywords = "KNN, Lead-free, Piezoelectric, SSCG, Single crystal",

author = "Jie Yang and Qunbao Yang and Yongxiang Li and Yun Liu",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2016",

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doi = "10.1016/j.jeurceramsoc.2015.11.002",

language = "English",

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TY - JOUR

T1 - Growth mechanism and enhanced electrical properties of K0.5Na0.5NbO3-based lead-free piezoelectric single crystals grown by a solid-state crystal growth method

AU - Yang, Jie

AU - Yang, Qunbao

AU - Li, Yongxiang

AU - Liu, Yun

PY - 2016/2/1

Y1 - 2016/2/1

N2 - (K0.45Na0.55)0.94Li0.06NbO3 (KNLN) single crystals were grown by a solid-state crystal growth (SSCG) method. The effects of MnO2 and crystal orientation of the seeds on the KNLN single crystal growth were investigated. It is found that liquid phase and interfacial reaction mechanisms affect the crystal growth for the SSCG. Using the <110>-oriented KTaO3 crystal as seeds, prism-shaped KNLN-100xMnO2 (x=0-0.02) single crystals with a dimension of ~10mm×10mm were successfully obtained. The electrical properties of such single crystals were affected with MnO2 addition. The resultant <100>-oriented KNLN single crystals exhibit excellent piezoelectric performances: Smax=0.38% and d33*=995pm/V at Emax=38kV/cm, TC=460°C, superior to other KNN-based piezoceramics even exceed lead-based ceramics. This work indicates that the SSCG is a practicable approach to prepare high-performance KNLN lead-free piezoelectric single crystals.

AB - (K0.45Na0.55)0.94Li0.06NbO3 (KNLN) single crystals were grown by a solid-state crystal growth (SSCG) method. The effects of MnO2 and crystal orientation of the seeds on the KNLN single crystal growth were investigated. It is found that liquid phase and interfacial reaction mechanisms affect the crystal growth for the SSCG. Using the <110>-oriented KTaO3 crystal as seeds, prism-shaped KNLN-100xMnO2 (x=0-0.02) single crystals with a dimension of ~10mm×10mm were successfully obtained. The electrical properties of such single crystals were affected with MnO2 addition. The resultant <100>-oriented KNLN single crystals exhibit excellent piezoelectric performances: Smax=0.38% and d33*=995pm/V at Emax=38kV/cm, TC=460°C, superior to other KNN-based piezoceramics even exceed lead-based ceramics. This work indicates that the SSCG is a practicable approach to prepare high-performance KNLN lead-free piezoelectric single crystals.

KW - KNN

KW - Lead-free

KW - Piezoelectric

KW - SSCG

KW - Single crystal

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U2 - 10.1016/j.jeurceramsoc.2015.11.002

DO - 10.1016/j.jeurceramsoc.2015.11.002

M3 - Article

SN - 0955-2219

VL - 36

SP - 541

EP - 550

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 3

ER -

Growth mechanism and enhanced electrical properties of K_0.5Na_0.5NbO₃-based lead-free piezoelectric single crystals grown by a solid-state crystal growth method

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