Control of crystal structure and performance evaluation of multi-piezo material of Li1xNaxNbO3:Pr3

Hirotaka Hara, Chao Nan Xu, Ruiping Wang, Xu Guang Zheng, Maiko Nishibori, Eiji Nishibori

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)


Piezoelectric LiNbO3:Pr3+ has recently attracted attention as a so-called multi-piezo material, exhibiting simultaneously piezoluminescence and piezoelectricity. In order to investigate and improve the performance of piezoluminescence and piezoelectricity in the newly found multi-piezo material LiNbO3:Pr3+, a systematic study has been carried out on both the crystal structural stability and the correlated multi-piezo performance through structure control between LiNbO3 and NaNbO3. Full set samples of Li1xNaxNbO3:Pr3+ (x = 01) with various Li/Na ratios were synthesized, and the crystal structure, piezoluminescence performance, piezoelectric property d33, and their correlations were systematically investigated. We found that four crystal phases, LiNbO3-R3c, NaNbO3-R3c, NaNbO3-P21ma, NaNbO3-Pbma, can exist stably with co-existence in Li1xNaxNbO3:Pr3+ by controlling the Li/Na ratio. A strong correlation between piezoluminescence and piezoelectric properties was verified. Furthermore, the highest piezoluminescence intensity and piezoelectric constant were realized near the phase boundary of NaNbO3-R3c and NaNbO3-P21ma, demonstrating the crystal structure control as a promising technology to engineer multi-piezo materials.

ジャーナルJournal of the Ceramic Society of Japan
出版ステータス出版済み - 8月 1 2020

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学


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