Ma Jian, Wu Juan, Wu Bo
Physics Department, Sichuan Province Key Laboratory of Information Materials, Southwest Minzu University Chengdu 610041 P. R. China
Sichuan Province Key Laboratory of Information Materials and Devices Application, Chengdu University of Information Technology Chengdu 610225 P. R. China
RSC Adv. 2018 Aug 23;8(52):29871-29878. doi: 10.1039/c8ra06183a. eCollection 2018 Aug 20.
In this work, we designed a new system of (1 - )KNaNbSbO-BiLaNaZrO (KNNS-BLNZ, 0 ≤ ≤ 0.06) ceramics, and systemically investigated both their electrical performance and temperature stability. Through optimizing the composition, a relatively good comprehensive performance (, ∼ 455 ± 10 pC N, ∼ 0.47 ± 0.02, ∼ 266 °C, strain ∼ 0.148%, and ) is obtained in the ceramics with = 0.040, which is attributed to the construction of a rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary. Moreover, a good temperature stability of remnant polarization ( ) as well as strain value ( / ∼ 89.6%, / ∼ 73.2%, / ∼ 92.6%, / ∼ 74.1%) is gained in KNNS-0.040BLNZ ceramics with a broad temperature range from room temperature to 180 °C. Hence, we believe that KNNS-BLNZ ceramics opens a window for the practical application of lead-free ceramics.
在本工作中，我们设计了一种新型的(1 - )KNaNbSbO-BiLaNaZrO（KNNS-BLNZ，0 ≤ ≤ 0.06）陶瓷体系，并系统地研究了其电学性能和温度稳定性。通过优化成分，在 = 0.040的陶瓷中获得了相对较好的综合性能（， ∼ 455 ± 10 pC N， ∼ 0.47 ± 0.02， ∼ 266 °C，应变 ∼ 0.148%，以及 ），这归因于菱方-正交-四方（R-O-T）相界的构建。此外，在KNNS-0.040BLNZ陶瓷中，从室温到180 °C的宽温度范围内，剩余极化强度（ ）以及应变值（ / ∼ 89.6%， / ∼ 73.2%， / ∼ 92.6%， / ∼ 74.1%）都具有良好的温度稳定性。因此，我们认为KNNS-BLNZ陶瓷为无铅陶瓷的实际应用打开了一扇窗口。
