Structural and electrical studies of excessively Sm2O3 substituted soft PZT nanoceramics
| العنوان: | Structural and electrical studies of excessively Sm2O3 substituted soft PZT nanoceramics |
|---|---|
| المؤلفون: | D. L. Sastry, T. Badapanda, S. Ramesh, K. Chandra Babu Naidu, T. Anil Babu, K. V. Ramesh |
| المصدر: | Ceramics International. 47:31294-31301 |
| بيانات النشر: | Elsevier BV, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Process Chemistry and Technology, Pyrochlore, Analytical chemistry, Dielectric, engineering.material, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Tetragonal crystal system, visual_art, Volume fraction, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, engineering, Ceramic, Temperature coefficient, Perovskite (structure), Solid solution |
| الوصف: | The solid solution of Pb1-x Sm2x/3 (Zr0.6 Ti0.4) O3 ceramics with x = 0.1, 0.2, 0.3, and 0.4 was prepared via the high-energy ball milling technique. Further, the effect of excessive Sm2O3 substitution at Pb-site on structural, dielectric, and dc-conductivity properties was studied. The X-ray diffraction (XRD) analysis confirmed that all samples were crystallized with perovskite and pyrochlore diphase form. Excess Sm3+ substitution in the PZT system increases the pyrochlore volume fraction from 5 to 20% and induces a structural phase transition from rhombohedral to a tetragonal structure. The microstructural study by TEM and SEM indicated that the particles were spherical with an average size of 43–55 nm. The frequency and temperature-dependent dielectric constant for all compositions was carried out and it is obtained that the dielectric constant decreases with Sm3+ content. The phase transition temperature first decreases up to x = 0.2 and then increases for the higher concentration of samarium. The dc-conductivity studies revealed that all samples showed an unusual mixed TCR effect (both positive and negative temperature coefficient of resistance). Such properties of the studied samples indicate that the material is suitable for potential applications in thermistors, and temperature sensors of the automotive, and petroleum industries. |
| تدمد: | 0272-8842 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::427b6762436ff99ec617cd86d24987eaTest https://doi.org/10.1016/j.ceramint.2021.08.002Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........427b6762436ff99ec617cd86d24987ea |
| قاعدة البيانات: | OpenAIRE |
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