Department of Physics, Faculty of Science, Al-Arish University, Al-Arish, Egypt.
Academy of Scientific Research and Technology of the Arab Republic of Egypt, Cairo, Egypt.
Sci Rep. 2023 Mar 14;13(1):4192. doi: 10.1038/s41598-023-31279-3.
The development of dielectric constant materials for energy storage applications is in high demand. Lead zirconate and lead zirconate titanate doping with erbium thin films and bulk-based devices with variant dielectric constant were created in this work. Pb-ErZr (PEZ) and Pb-Er-Zr-Ti (PEZT) thin films were produced on a glass substrate using a sol-gel doctor blade technique at low temperature. X-ray diffraction (XRD), transmission electron microscopy (TEM), and electron diffraction (ED) were used to examine the structure of the produced nanocrystals. PEZ and PEZT films had nanocrystals that were 9.5 nm and 15 nm in size, respectively, whereas PEZ and PEZT bulk nano-rods had 455 ± 5 nm in length and 45 ± 1 nm in diameter. The TEM and XRD results were found to be completely consistent in terms of particle size. Ferroelectric properties and dielectric characteristics were found to be frequency dependent. Dielectric experiments revealed that the dielectric constant was decreasing for bulk samples compared to film samples. The energy-storage efficiency of PEZ films was roughly 66.01%, and 67.8% for PEZT. The residual polarization of the Er-doped PEZ and PEZT films was the highest, reaching 36.25 μC/cm and 69.79 μC/cm, respectively, and the coercive fields were 43 kV/cm and 45.43 kV/cm, respectively. On the other hand, PEZ and PEZT bulk samples had residual polarizations of 27.15 μC/cm and 37.29 μC/cm, respectively, while having coercive fields of 32.3 kV/cm and 39.3 kV/cm, respectively. It was found that (PEZ) and (PEZT) samples may have potential use in energy storage applications.
储能应用中介电常数材料的发展需求很高。本工作中制备了铒掺杂锆酸铅和锆钛酸铅的薄膜和基于变体介电常数的块状器件。使用溶胶-凝胶刮刀技术在低温下在玻璃衬底上制备 Pb-ErZr(PEZ)和 Pb-Er-Zr-Ti(PEZT)薄膜。使用 X 射线衍射(XRD)、透射电子显微镜(TEM)和电子衍射(ED)来研究所制备纳米晶体的结构。PEZ 和 PEZT 薄膜的纳米晶体分别为 9.5nm 和 15nm，而 PEZ 和 PEZT 块状纳米棒的长度为 455±5nm，直径为 45±1nm。TEM 和 XRD 的结果在粒径方面完全一致。铁电性能和介电特性被发现与频率有关。介电实验表明，与薄膜样品相比，块状样品的介电常数降低。PEZ 薄膜的储能效率约为 66.01%，PEZT 为 67.8%。掺杂 Er 的 PEZ 和 PEZT 薄膜的剩余极化强度最高，分别达到 36.25μC/cm 和 69.79μC/cm，矫顽场分别为 43kV/cm 和 45.43kV/cm。另一方面，PEZ 和 PEZT 块状样品的剩余极化强度分别为 27.15μC/cm 和 37.29μC/cm，而矫顽场分别为 32.3kV/cm 和 39.3kV/cm。研究发现，(PEZ)和(PEZT)样品可能在储能应用中具有潜在的用途。
