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Enhanced Dielectric and Energy Storage Properties in Fe‐Doped BCZT Ferroelectric Ceramics
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-06-23 , DOI: 10.1002/pssa.202000253 Mingze Gao 1 , Wenwei Ge 1 , Xia Li 2 , Hongming Yuan 2 , Changyi Liu 3 , Hongwei Zhao 4 , Yaqing Ma 5 , Yunfei Chang 5
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-06-23 , DOI: 10.1002/pssa.202000253 Mingze Gao 1 , Wenwei Ge 1 , Xia Li 2 , Hongming Yuan 2 , Changyi Liu 3 , Hongwei Zhao 4 , Yaqing Ma 5 , Yunfei Chang 5
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x mol% Fe‐doped Ba(Zr0.2Ti0.8)O3‐50 mol%(Ba0.7Ca0.3)TiO3 (abbreviated as xFe:BCZT) ferroelectric ceramics with x = 0, 0.075, 0.375, 0.75, 1.5, and 3 are fabricated via conventional solid‐state reaction methods. Fe incorporates into the lattice, and all the xFe:BCZT ceramics show pure perovskite structure except 3Fe:BCZT ceramics in which tiny amount of iron oxide is detected via X‐ray diffraction (XRD). The average grain sizes are significantly reduced from ≈20 to ≈2 μm with increasing Fe‐doping content. The Curie temperature of xFe:BCZT ceramics decreases with increasing Fe‐doping concentration and the room temperature dielectric constant significantly increased. Polarization hysteresis loops become slim after Fe‐doping. The recoverable energy storage density Wrec of xFe:BCZT ceramics is slightly enhanced to 0.240 J cm−3 with an energy storage efficiency η% = 70.1% at x = 0.075 under E‐field of 50 kV cm−1. The η% can be enhanced to as high as 93.8% at x = 3 with Wrec = 0.153 J cm−3 due to a slim P–E loops via Fe‐doping. The results indicate a potential method to fabricate high efficiency energy storage materials via Fe‐doping.
中文翻译：
掺铁BCZT铁电陶瓷中增强的介电和储能性能
x mol％的Fe掺杂的Ba（Zr 0.2 Ti 0.8）O 3 -50 mol％（Ba 0.7 Ca 0.3）TiO 3（缩写为x Fe：BCZT）铁电陶瓷x = 0、0.075、0.375、0.75、1.5 ，和3是通过传统的固态反应方法制造的。Fe混入晶格中，除3Fe：BCZT陶瓷中通过X射线衍射（XRD）检测到少量氧化铁外，所有x Fe：BCZT陶瓷均显示纯钙钛矿结构。随着Fe掺杂含量的增加，平均晶粒尺寸从≈20μm显着减小。x的居里温度Fe：BCZT陶瓷随着Fe掺杂浓度的增加而降低，并且室温介电常数显着提高。掺铁后极化磁滞回线变细。可收回的能量存储密度W¯¯ REC的X的Fe：BCZT陶瓷稍微增强，以0.240Ĵ厘米-3与能量存储效率η（％）= 70.1原子％X 下= 0.075 Ë的50千伏厘米-field -1。由于纤细的P – E，在x = 3且W rec = 0.153 J cm -3时，η％可以提高到93.8％。通过铁掺杂循环。结果表明，一种潜在的方法可以通过掺铁来制造高效储能材料。
更新日期：2020-08-24
中文翻译：
掺铁BCZT铁电陶瓷中增强的介电和储能性能
x mol％的Fe掺杂的Ba（Zr 0.2 Ti 0.8）O 3 -50 mol％（Ba 0.7 Ca 0.3）TiO 3（缩写为x Fe：BCZT）铁电陶瓷x = 0、0.075、0.375、0.75、1.5 ，和3是通过传统的固态反应方法制造的。Fe混入晶格中，除3Fe：BCZT陶瓷中通过X射线衍射（XRD）检测到少量氧化铁外，所有x Fe：BCZT陶瓷均显示纯钙钛矿结构。随着Fe掺杂含量的增加，平均晶粒尺寸从≈20μm显着减小。x的居里温度Fe：BCZT陶瓷随着Fe掺杂浓度的增加而降低，并且室温介电常数显着提高。掺铁后极化磁滞回线变细。可收回的能量存储密度W¯¯ REC的X的Fe：BCZT陶瓷稍微增强，以0.240Ĵ厘米-3与能量存储效率η（％）= 70.1原子％X 下= 0.075 Ë的50千伏厘米-field -1。由于纤细的P – E，在x = 3且W rec = 0.153 J cm -3时，η％可以提高到93.8％。通过铁掺杂循环。结果表明，一种潜在的方法可以通过掺铁来制造高效储能材料。
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