کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1591574 | 1515590 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase diagram and electrostrictive effect in BNT-based ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phase diagram and electrostrictive effect in BNT-based ceramics Phase diagram and electrostrictive effect in BNT-based ceramics](/preview/png/1591574.png)
چکیده انگلیسی
In this work, phase diagram for the (Bi0.5Na0.5)TiO3-KNbO3-SrTiO3 ternary system has been constructed and analyzed based on macroscopic properties and structure analysis and pseudocubic (0.92âx)BNT-0.08KN-xST (0â¤xâ¤0.07) ceramics have been fabricated and investigated. A morphotropic phase boundary between the ferroelectric rhombohedral and relaxor pseudocubic phases at around critical composition was proposed, resulting in large strain response. The polarization hysteresis loops, strain hysteresis loops and S-P2 curves demonstrate electrostrictive behavior of all studied samples. A very high electrostrictive strain (~0.148%) with a high electrostrictive coefficient Q11 of 0.0236 m4 Câ2 is obtained for the 0.90BNT-0.08KN-0.02ST composition, which was entirely comparable to the well-known electrostrictive material Pb(Mg1/3Nb2/3 )O3 and attributed to the formation of relaxor pseudocubic phase developed by the SrTiO3 substitution. Meanwhile, the electrostrictive coefficient exhibited a highly temperature-insensitive behavior, indicating that the investigated system is suitable for high-precision positioning devices and solid-state actuators.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 206, March 2015, Pages 22-25
Journal: Solid State Communications - Volume 206, March 2015, Pages 22-25
نویسندگان
Wangfeng Bai, Lingyu Li, Wei Wang, Bo Shen, Jiwei Zhai,