| Intermediate ferroelectric phase driven ferroelectric-relaxor crossover and superior storage properties in phase boundary engineered BCZT ceramics | |
Nayak, R.L.1; Zhang, YJ(张亚君)2 ; Dash, Sadhwi S.1; Sahoo, M.P.K.1 | |
| 2022-04-15 | |
| Source Publication | CERAMICS INTERNATIONAL Impact Factor & Quartile |
| ISSN | 0272-8842 |
| Volume | 48Issue:8Pages:10803-10816 |
| Abstract | Compositional tuning in materials at the morphotropic phase boundary has been a novel strategy to realize unprecedented and exotic physical properties. This work reports the structural, dielectric, electrical, and energy storage properties in lead-free BCZT (Ba0.85Ca0.15Zr0.1Ti0.9O3) at the morphotropic phase boundary (MPB) through compositional engineering at Ba-site. The polycrystalline samples of Ba0.85(1-x)(La1/2Na1/2)0.85xCa0.15Zr0.1Ti0.9O3 (x = 0.0, 0.05, 0.075, 0.1) are synthesized by mechanical alloying followed by heating the samples at elevated temperatures. Rietveld refinement of powder X-ray diffraction patterns unveils coexisting ferroelectric P4mm (tetragonal) and ferroelectric R3m (Rhombohedral) symmetries, for samples x = 0.0–0.075. Intriguingly, the sample with x = 0.10 supports the inclusion of an intermediate ferroelectric phase with orthorhombic (Amm2) symmetry along with P4mm and R3m symmetries. Dielectric studies reveal a structurally coherent normal ferroelectric-ergodic relaxor crossover with Vogel-Fulcher type freezing of polar-nano-regions. Furthermore, the La/Na co-doping substantially enhances the recoverable energy density (Wrec); from 357 mJ/cm3 to 664 mJ/cm3, reduces the loss energy density (WL); from 101 mJ/cm3 to 42 mJ/cm3 and increases the storage efficiency (η); from 77.9% to 94%. The doping-induced enhanced dielectric and storage properties are elucidated by impedance spectroscopy and density functional theory (DFT)-based calculations. © 2021 Elsevier Ltd and Techna Group S.r.l. |
| Keyword | Density functional theory Ferroelectric materials Ferroelectricity Mechanical alloying Rietveld refinement Storage (materials) Compositional tuning Energy density Ferroelectric phasis Ferroelectric property Ferroelectric relaxors Functional applications In-phase Morphotropic phase boundaries Novel strategies Storage properties Powders Defects Ferroelectric properties Perovskites |
| Publisher | Elsevier Ltd |
| DOI | 10.1016/j.ceramint.2021.12.296 |
| Indexed By | EI ; SCIE |
| Language | 英语 |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000782052700002 |
| EI Accession Number | 20220111428979 |
| EI Keywords | Perovskite |
| EI Classification Number | 482.2 Minerals ; 531 Metallurgy and Metallography ; 694.4 Storage ; 701.1 Electricity: Basic Concepts and Phenomena ; 708.1 Dielectric Materials ; 801 Chemistry ; 922.1 Probability Theory ; 931.3 Atomic and Molecular Physics ; 931.4 Quantum Theory ; Quantum Mechanics |
| Original Document Type | Journal article (JA) ; Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/481880 |
| Collection | 土木工程与力学学院 |
| Corresponding Author | Sahoo, M.P.K. |
| Affiliation | 1.Department of Physics, VSS University of Technology, Odisha, 768017, India; 2.Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Gansu, Lanzhou; 730000, China |
| First Author Affilication | School of Physical Sicence and Technology |
| Corresponding Author Affilication | School of Physical Sicence and Technology |
| Recommended Citation GB/T 7714 | Nayak, R.L.,Zhang, Yajun,Dash, Sadhwi S.,et al. Intermediate ferroelectric phase driven ferroelectric-relaxor crossover and superior storage properties in phase boundary engineered BCZT ceramics[J]. CERAMICS INTERNATIONAL,2022,48(8):10803-10816. |
| APA | Nayak, R.L.,Zhang, Yajun,Dash, Sadhwi S.,&Sahoo, M.P.K..(2022).Intermediate ferroelectric phase driven ferroelectric-relaxor crossover and superior storage properties in phase boundary engineered BCZT ceramics.CERAMICS INTERNATIONAL,48(8),10803-10816. |
| MLA | Nayak, R.L.,et al."Intermediate ferroelectric phase driven ferroelectric-relaxor crossover and superior storage properties in phase boundary engineered BCZT ceramics".CERAMICS INTERNATIONAL 48.8(2022):10803-10816. |
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