Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Khan, Naimat Ullah | - |
dc.contributor.author | Yun, Won Seok | - |
dc.contributor.author | Ullah, Aman | - |
dc.contributor.author | Ali, Sabir | - |
dc.contributor.author | Sheeraz, Muhammad | - |
dc.contributor.author | Ullah, Amir | - |
dc.contributor.author | Kim, Ill Won | - |
dc.contributor.author | Ahn, Chang Won | - |
dc.date.accessioned | 2024-01-17T11:40:13Z | - |
dc.date.available | 2024-01-17T11:40:13Z | - |
dc.date.created | 2024-01-11 | - |
dc.date.issued | 2024-03 | - |
dc.identifier.issn | 0272-8842 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/47618 | - |
dc.description.abstract | Lead-free Bi1/2Na1/2TiO3 (BNT)-based relaxor ferroelectric ceramics with superior electrostrictive coefficient features have recently gained a lot of attention due to their application in high-precision displacement actuators. In this work, we propose an effective approach to enhance the electrostrictive effect via tuning the phase transition temperature around ambient temperature in BNT-based ceramics. Herein, a novel Bi(Mn1/2Ce1/2)O3 (BMnCe) modifier was adopted as an activator into 0.935Bi1/2Na1/2TiO3-0.065BaTiO3 (0.935BNT-0.065BT) for modifying the phase boundary (TF-R) around the ambient temperature. The compositional and temperature-dependent dielectric, ferroelectric, and electrostrain were systematically investigated. All samples exhibit a pure perovskite structure. Rietveld refinement revealed that the 0.935BNT-0.065BT ceramic presents a coexistence of rhombohedral (R3c) and tetragonal (P4bm) phases. As the BMnCe content increases, the tetragonal (P4bm) phase becomes more prevalent and eventually shifts into a pseudocubic phase. It was found that the addition of BMnCe can effectively tune the TF-R below ambient temperature and enhance the relaxor behavior. The polarization and electrostrain analysis revealed that the ferroelectric long-range order decreases with increasing BMnCe; specifically, a unique region emerges where remnant polarization, quasistatic d33, and negative strain abruptly drop. As a result, a high electrostrain (S) of 0.43 % with a normalized strain (Smax/Emax) of 716 pm/V was achieved at the critical composition (0.01 M concentration of BMnCe). More importantly, (0.935-x)BNT-0.065BT-xBMnCe (x = 0.01) shows a large electrostrictive coefficient (Q33) of 0.032 m4/C2 with a giant normalized electrostrictive coefficient (Q33/E) of 5.33x10−9 m5/C2V at room temperature. Furthermore, the Q33 and Q33/E values show temperature insensitivity up to 120 °C, rendering the compound suitable for actuation-based devices. These results offer an effective avenue for designing high-performance BNT-based materials with giant electrostrictive coefficients. © 2023 Elsevier Ltd and Techna Group S.r.l. | - |
dc.language | English | - |
dc.publisher | Elsevier | - |
dc.title | Large electrostrictive response via tailoring ergodic relaxor state in Bi1/2Na1/2TiO3-based ceramics with Bi(Mn1/2Ce1/2)O3 end-member | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.ceramint.2023.12.195 | - |
dc.identifier.wosid | 001171710800001 | - |
dc.identifier.scopusid | 2-s2.0-85181137164 | - |
dc.identifier.bibliographicCitation | Ceramics International, v.50, no.6, pp.8790 - 8799 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Piezoelectric properties | - |
dc.subject.keywordAuthor | Actuators | - |
dc.subject.keywordAuthor | Lead-free | - |
dc.subject.keywordAuthor | Bi1/2Na1/2TiO3 | - |
dc.subject.keywordAuthor | Bi(Mn1/2Ce1/2)O3 | - |
dc.subject.keywordAuthor | Ferroelectric properties | - |
dc.subject.keywordPlus | FIELD-INDUCED STRAIN | - |
dc.subject.keywordPlus | ELECTRIC-FIELD | - |
dc.subject.keywordPlus | STRUCTURE EVOLUTION | - |
dc.subject.keywordPlus | PHASE-TRANSITIONS | - |
dc.subject.keywordPlus | ELECTROMECHANICAL PROPERTIES | - |
dc.subject.keywordPlus | PIEZOELECTRIC PROPERTIES | - |
dc.subject.keywordPlus | FERROELECTRIC CERAMICS | - |
dc.subject.keywordPlus | ENERGY-STORAGE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.citation.endPage | 8799 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 8790 | - |
dc.citation.title | Ceramics International | - |
dc.citation.volume | 50 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.type.docType | Article | - |
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