Synergistic impact of metal/semiconductor (Co@Co3O4) core-shell nanostructures on the structure, electrical, and dielectric properties of BaTiO3-based composites
Yazarlar (6)
Yassine Slimani
Imam Abdulrahman Bin Faisal University, Suudi Arabistan
Prof. Dr. Hamit ERDEMİ Yalova Üniversitesi, Türkiye
Prof. Dr. Abdulhadi Baykal İstanbul Aydın Üniversitesi, Türkiye
Munirah A. Almessiere
Imam Abdulrahman Bin Faisal University, Suudi Arabistan
Atul Thakur
Auh-Gurugram, Hindistan
Khalid Mujasam Batoo
King Saud University, Suudi Arabistan
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Physics and Chemistry of Solids (Q2)
Dergi ISSN 0022-3697 Dergi Bilgileri (2024)
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 12-2024
Kabul Tarihi – Yayınlanma Tarihi 01-12-2024
Cilt / Sayı / Sayfa 195 / 1 / 112292–11233 DOI 10.1016/j.jpcs.2024.112292
Makale Linki https://doi.org/10.1016/j.jpcs.2024.112292
UAK Araştırma Alanları
Polimer Bilimi
Özet
The synergistic impact of metal/semiconductor nanostructures with controlled size and specific morphology on the structure, electrical, and dielectric properties of BaTiO3-based composites has been investigated. The conductive metal (Co) and semiconductor metal oxide (Co3O4) in the form of core-shell Co@Co3O4 nanoparticles have been used as additives for the first time in the present study. Accordingly, BaTiO3/Co@Co3O4 composite materials with different percentage ratios of 100/0 %, 98/2 %, 95/5 %, 90/10 %, 80/20 %, and 0/100 % have been developed and studied. The prepared ceramic composites were characterized via XRD, SEM, EDX, and impedance analyzer. XRD results revealed the formation of high-purity cubic BaTiO3 phase without any traces of secondary phases, as well as the formation of composite structures when Co@Co3O4 core-shell nanostructures are introduced. No diffraction peaks related to other phases are detected in the composite ceramics. According to SEM and elemental distribution analyses, the Co@Co3O4 core-shell nanoparticles are locally distributed between the BaTiO3 grains and formed 0–3 type composites. The composition- and temperature-dependent dielectric and electrical characteristics were also explored. The incorporation of Co@Co3O4 core-shell nanostructures improved both the mobility of charge carriers and charge carrier density by lowering the barriers that greatly affect polarization in ceramic composites. The electrical conductivity was higher in the composite with a BaTiO3:Co@Co3O4 ratio of 80 %:20 % in comparison to pristine BaTiO3 and other composite ceramics. The dielectric loss tangent (tan δ) is lower for composite ceramics with low additive contents. Furthermore, the resonance maximum in tan δ curves for these samples moves to higher frequencies as temperature increases. Based on Cole-Cole plots, a small and hardly visible suppressed semicircle and a flat line are observed in the studied frequency region. The angle of the semicircles upsurges as the concentration of Co@Co3O4 core-shell nanostructures increases, which can be attributed to the increased inhomogeneity in the composites. The present study may offer some new clues for understanding and developing metal/semiconductor/BaTiO3-based composites.
Anahtar Kelimeler
BaTiO3-Based ceramics | Co@Co3O4 core-shell nanostructures | Dielectric properties | Electrical conductivity | Microstructure
Science Direct
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Scopus 13
Synergistic impact of metal/semiconductor (Co@Co3O4) core-shell nanostructures on the structure, electrical, and dielectric properties of BaTiO3-based composites
İletişim
  • Yalova Üniversitesi Rektörlüğü, Bahçelievler Mah. Çınarcık Yolu Caddesi No: 26 Merkez - YALOVA, 77200
  • unis@yalova.edu.tr 0226 815 50 00
Sosyal Media
Talentsoft Yazılım Talent Yazılım
Tasarım ve Programlama #2025