Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Brahim Elouadi"'
Autor:
Jianming Deng, Xiaojun Sun, Saisai Liu, Laijun Liu, Tianxiang Yan, Liang Fang, Brahim Elouadi
Publikováno v:
Journal of Advanced Dielectrics, Vol 6, Iss 1, Pp 1650009-1-1650009-9 (2016)
CaCu3Ti4−xYxO12 (0≤x≤0.12) ceramics were fabricated with conventional solid-state reaction method. Phase structure and microstructure of prepared ceramics were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), res
Externí odkaz:
https://doaj.org/article/c1a35a507b184a2f93f476be56f6b4e4
Publikováno v:
Eurasian Chemico-Technological Journal, Vol 10, Iss 1, Pp 9-17 (2008)
The glass compositions isolated within the system (35-z)Na2O-zFe2O3-5Al2O3-60P2O5 (5 ≤ z ≤ 20), were found to belong to the domains of metaphosphate (z = 5) and oligo-phosphate (5 < z ≤ 20) families. It was also found that less that 10 mol.% of
Externí odkaz:
https://doaj.org/article/39229ef2a410415da02adbe373f3ce48
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 5, Pp i39-i39 (2010)
Single crystals of lithium zinc vanadate, LiZnVO4, were grown by the flux method. The structural type of this vanadate is characterized by a three-dimensional arrangement of tetrahedra sharing apices in an LiZnVO4 network. This arrangement contains t
Externí odkaz:
https://doaj.org/article/7f65d05a2a8c41448d80c59eff7aa907
Autor:
Nabil Fattah, Faten Jaballi, Brahim Elouadi, Mongi Felhi, Kamel Zayani, Mahmoud Khelifi, Ali Tlili, Noureddine Abbes
Publikováno v:
Carbonates and Evaporites. 34:1689-1702
Ypresian phosphate deposits of the Meknassy-Mezzouna basin (central part of Tunisia) correspond to an alternation of thick phosphatic layers and dolomitic marls. The present work aimed to follow the mineralogical and geochemical behavior of natural p
Autor:
Biaolin Peng, Feifei Han, Xing Ma, Shaokai Ren, Liang Fang, Brahim Elouadi, Xiaojun Kuang, Laijun Liu, Tianxiang Yan
Publikováno v:
Journal of Electronic Materials. 47:7106-7113
(1 − x)K0.5Na0.5NbO3-x(Bi0.5K0.5)ZrO3 [abbreviated as (1 − x)KNN-xBKZ, 0 ≤ x ≤ 0.08] lead-free ceramics have been fabricated by a solid-state processing route. Based on the x-ray diffraction data and temperature-dependent dielectric character
Autor:
Liang Fang, Xing Ma, Tianxiang Yan, Laijun Liu, Feifei Han, Shaokai Ren, Jianming Deng, Lei Ren, Brahim Elouadi, Biaolin Peng
Publikováno v:
Materials Research Bulletin. 99:403-408
The structure, morphology and dielectric properties of the oxygen annealed (O2-annealed) and untreated (as-prepared) 0.85(K0.5Na0.5) NbO3-0·15SrZrO3 (KNN-15SZ) ceramics were investigated. The temperature dependence of dielectric permittivity shows t
Autor:
M. El Marssi, Bouchaib Manoun, H. Kaddoussi, Zdravko Kutnjak, Hamadi Khemakhem, Brahim Elouadi, Jean-Noël Chotard, Abdelilah Lahmar, Yaovi Gagou, J.-L. Dellis
Publikováno v:
Journal of Alloys and Compounds. 713:164-179
The influence of the incorporation of Calcium in lead-free ferroelectric Ba(Zr0.1Ti0.9)O3 perovskite on its structural phase transition, dielectric, pyroelectric, ferroelectric, and electrocaloric effect was investigated. Room temperature X-ray diffr
Autor:
Tianxiang Yan, Brahim Elouadi, Laijun Liu, Jianming Deng, Xiaojun Sun, Liang Fang, Saisai Liu
Publikováno v:
Materials Research Bulletin. 88:320-329
Y 2/3 Cu 3 Ti 4 O 12 (YCTO) ceramics were sintered in air (YCTO-air) and pure O 2 atmosphere (YCTO-O 2 ), respectively. It was found that the permittivity and dielectric loss of YCTO-O 2 were decreased drastically in low frequency. The frequency depe
Publikováno v:
Journal of Electronic Materials. 45:4089-4099
(1−x)K0.5Na0.5NbO3-xSrMnO3 (0.02 ≤ x ≤ 0.08) (KNN-xSM) ceramics were fabricated by a conventional solid-state technique. X-ray diffraction of the samples revealed that the crystal structure changes from orthorhombic to tetragonal, and finally t
Publikováno v:
Materials Research Bulletin. 73:437-445
(1 − x )K 0.45 Na 0.49 Li 0.06 NbO 3− x BiAlO 3 ((1 − x )KNLN- x BA) solid solution has been synthesized by a conventional solid state reaction. Crystal structure, microstructure, dielectric properties of the (1 − x )KNLN- x BA ceramics were