当前位置：
X-MOL 学术
›
ACS Appl. Electron. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Dielectric, Ferroelectric, and High-Temperature Strain Behavior of Rare Earth Ce-Doped 0.67BiFeO3–0.33BaTiO3 Lead-Free Ferroelectric Ceramics
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2023-11-21 , DOI: 10.1021/acsaelm.3c01361 Wei Li 1 , Xiang He 2 , Ying Liu 3 , Oleg V’yunov 1 , Dongfang Pang 1
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2023-11-21 , DOI: 10.1021/acsaelm.3c01361 Wei Li 1 , Xiang He 2 , Ying Liu 3 , Oleg V’yunov 1 , Dongfang Pang 1
Affiliation
|
A Ce4+-substituted 0.67BiFeO3–0.33BaTiO3 lead-free ceramic system was systematically investigated. The results indicate that all samples exhibit the coexistence of rhombohedral phase and pseudocubic phase. Dielectric measurements indicate that with the doping of Ce4+, the ferroelectric phase gradually transferred to the relaxor phase. The addition of an appropriate number of Ce4+ ions led to a larger grain size of the BiFeO3–BaTiO3 (BF–BT) ceramics, a lower Fe2+ content, and higher resistivity. At a Ce4+ concentration (x) of 0.3 mol %, the BF–BT–xCe ceramic exhibited excellent dynamic piezoelectric coefficients (d33* = 406 pm/V) and a high Curie temperature of 418.2 °C. Furthermore, the d33* (406 pm/V) at room temperature of BF–BT–0.003Ce significantly increased to 759 pm/V at 125 °C. The enhanced field-induced strain performance of the ceramics is attributable to lattice distortion induced by Ce4+ doping. The temperature-dependent behavior of the field-induced strain in the BF–BT–Ce ceramics was enhanced by thermally induced domain switching. This study confirms the potential of the investigated BF–BT–Ce ceramics as promising lead-free, environmentally friendly, and high-temperature piezoelectric material.
中文翻译：
稀土 Ce 掺杂 0.67BiFeO3–0.33BaTiO3 无铅铁电陶瓷的介电、铁电和高温应变行为
对Ce 4+取代的0.67BiFeO 3 –0.33BaTiO 3无铅陶瓷体系进行了系统研究。结果表明，所有样品均表现出菱面体相和赝立方相的共存。介电测量表明，随着Ce 4+的掺杂，铁电相逐渐转变为弛豫相。添加适量的Ce 4+离子可使BiFeO 3 –BaTiO 3 (BF-BT)陶瓷晶粒尺寸增大、Fe 2+含量降低、电阻率升高。当Ce 4+浓度( x )为0.3 mol %时，BF–BT– x Ce陶瓷表现出优异的动态压电系数( d 33 * = 406 pm/V)和418.2 °C的高居里温度。此外，BF–BT–0.003Ce 在室温下的d 33 * (406 pm/V) 在 125 °C 下显着增加至 759 pm/V。陶瓷增强的场致应变性能归因于Ce 4+掺杂引起的晶格畸变。BF-BT-Ce 陶瓷中场致应变的温度依赖性行为通过热致域切换得到增强。这项研究证实了所研究的 BF-BT-Ce 陶瓷作为有前途的无铅、环保、高温压电材料的潜力。
更新日期：2023-11-21
中文翻译：
稀土 Ce 掺杂 0.67BiFeO3–0.33BaTiO3 无铅铁电陶瓷的介电、铁电和高温应变行为
对Ce 4+取代的0.67BiFeO 3 –0.33BaTiO 3无铅陶瓷体系进行了系统研究。结果表明，所有样品均表现出菱面体相和赝立方相的共存。介电测量表明，随着Ce 4+的掺杂，铁电相逐渐转变为弛豫相。添加适量的Ce 4+离子可使BiFeO 3 –BaTiO 3 (BF-BT)陶瓷晶粒尺寸增大、Fe 2+含量降低、电阻率升高。当Ce 4+浓度( x )为0.3 mol %时，BF–BT– x Ce陶瓷表现出优异的动态压电系数( d 33 * = 406 pm/V)和418.2 °C的高居里温度。此外，BF–BT–0.003Ce 在室温下的d 33 * (406 pm/V) 在 125 °C 下显着增加至 759 pm/V。陶瓷增强的场致应变性能归因于Ce 4+掺杂引起的晶格畸变。BF-BT-Ce 陶瓷中场致应变的温度依赖性行为通过热致域切换得到增强。这项研究证实了所研究的 BF-BT-Ce 陶瓷作为有前途的无铅、环保、高温压电材料的潜力。
京公网安备 11010802027423号