Search Results - "Khemakhem, Hamadi"

Hyper‐Raman scattering study of the soft mode in relaxor ferroelectric (Ba0.8Sr0.2)0.925Bi0.05Ti0.95(Zn1/3Nb2/3)0.05O3 by Dhifallah, Nabil, Hehlen, Bernard, Khemakhem, Hamadi

“…We report hyper‐Raman scattering measurements of the lowest transverse optic (TO) phonon branch in the relaxor Bi0.05‐BSTZN in the paraelectric phase from 300…”
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Orthorhombic–tetragonal phase coexistence and enhanced piezoelectric properties at room temperature in Zn and Ta modified (Ba0.95Ca0.05)(Zr0.05Ti0.95)O3 ceramics through the synergistic effect of lattice distortion by Dhifallah, Nabil, Mohamed Amin Hentati, Hamadi Khemakhem

“…This study provides a fundamental understanding of the enhanced piezoelectric properties in ABO3 perovskite based lead-free piezoelectric materials. For this…”
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Structural, dielectric and Raman spectroscopy investigations of Ba1–xBi2x/3(Fe0.5Nb0.5)0.025Ti0.975O3 ceramics by Khedhri, Mohamed Hassen, Abdelmoula, Najmeddine, Khemakhem, Hamadi

“…This research work reports the structural, dielectric, and Raman scattering studies of Ba 1– x Bi 2 x /3 (Fe 0.5 Nb 0.5 ) 0.025 Ti 0.975 O 3 ( x  = 0–0.15)…”
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Effect of Mn doping on structure, the dielectric and electric properties of BCZT ceramics by Khmiri, Ismail, Kriaa, Issa, Khemakhem, Hamadi

“…The synthesis of (Ba 0.99 Ca 0.01 )(Zr 0.2 Ti 0.8 )O 3 (BCZT) and doped (Ba 0.99 Ca 0.01 )(Zr 0.2 Ti 0.8-x Mn x )O 3 (BCZT-xMn) ceramics was successfully…”
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Structural, spectroscopic and dielectric properties of Ca-doped BaTiO3 by Khedhri, Mohamed Hassen, Abdelmoula, Najmeddine, Khemakhem, Hamadi, Douali, Redouane, Dubois, Frederic

“…Ca-doped barium titanate BaTiO 3 nanopowders were synthesized by the sol–gel process using barium acetate [Ba(CH 3 COO) 2 ], calcium acetate [Ca(CH 3 COO) 2 ]…”
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Effect of acceptor and donor dopants (Na, Y) on the microstructure and dielectric characteristics of high Curie point PZT-modified ceramics by Khacheba, Maria, Abdessalem, Noura, Hamdi, Ahmed, Khemakhem, Hamadi

“…This study describes the preparation of a solid solution of Pb 2 + [ ( Zr 0.05 4 + , Ti 0.95 4 + ) 0.97 ( Al 1 / 3 3 + , Zn 1 / 2 2 + , W 1 / 3 6 + ) 0.03 ] O…”
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Investigation of temperature-dependent dynamic hysteresis loop and thermal energy conversion for Sn doped Ba0.95Sr0.05Ti0.95Zr0.05O3 ceramics by Djemel, Imen, Khedhri, Mohamed Hassen, Kriaa, Issa, Sassi, Zina, Seveyrat, Laurence, Abdelmoula, Najmeddine, Lebrun, Laurent, Khemakhem, Hamadi

“…Ferroelectric ceramics, Ba 0.95 Sr 0.05 (Ti 0.95 Zr 0.05 ) 1–x Sn x O 3 (BSTZS), with varying Sn content (x = 0%, 2.5%, 5%, and 7.5%), were synthesized using…”
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Structural, thermal, optical and dielectric properties of piezoelectric Ba0.8Ca0.2TiO3/polyvinyl alcohol nanocomposite films by Khedhri, Mohamed Hassen, Lajnef, Mohamed, Salhi, Slim, Abdelmoula, Najmeddine, Khemakhem, Hamadi, Dubois, Frederic, Douali, Redouane

“…This study reports the effect of Ba 0.8 Ca 0.2 TiO 3 (BCT) nanoparticles incorporation on the structural, thermal, optical, and dielectric properties of the…”
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Investigations on mode-division multiplexed free-space optical transmission for inter-satellite communication link by Singh, Karamjeet, Chebaane, Saleh, Ben Khalifa, Sana, Benabdallah, Feres, Ren, Xiaobing, Khemakhem, Hamadi, Grover, Amit, Singh, Mehtab

“…Inter-satellite data transmission links are very crucial for providing global inter-connectivity. We report designing and investigations on high date rate…”
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Structure, dielectric, and piezoelectric properties of Ba0.87Ca0.13 (Ti0.9Zr0.1) (1–x) (Zn1/3Nb2/3)x O3 ceramics by Abdessalem, Manel Ben, Aydi, Abdelhedi, Sassi, Zina, Seveyrat, Laurence, Perrin, Veronique, Abdelmoula, Najmeddine, Khemakhem, Hamadi, Lebrun, Laurent

“…We have studied the effects of Zn and Nb substitutions on dielectric, ferroelectric, and piezoelectric properties of Ba 0.87 Ca 0.13 (Ti 0.9 Zr 0.1 ) (1− x )…”
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A Comprehensive Review of Strategies toward Efficient Flexible Piezoelectric Polymer Composites Based on BaTiO3 for Next-Generation Energy Harvesting by Bouhamed, Ayda, Missaoui, Sarra, Amina Ben Ayed, Attaoui, Ahmed, Missaoui, Dalel, Jeder, Khawla, Guesmi, Nesrine, Njeh, Anouar, Hamadi Khemakhem, Kanoun, Olfa

“…The increasing need for wearable and portable electronics and the necessity to provide a continuous power supply to these electronics have shifted the focus of…”
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MORPHOTROPIC PHASE BOUNDARY IN (Na0.5 Bi0.5)TiO₃−BaTiO₃ LEAD FREE SYSTEM: XRD AND RAMAN SPECTROSCOPY STUDIES by Hamza Lidjici, Hamadi Khemakhem

“…In this paper, we report a raman spectroscopy and X-ray diffraction investigations on lead-free (1- x)Bi0.5Na0.5TiO₃-xBaTiO₃ (NBT-BT) solid solution ceramics…”
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X-ray diffraction study of Ba0.985Na0.015Ti0.985Nb0.015O3, Ba0.6Na0.4Ti0.6Nb0.4O3 and Ba0.3Na0.7Ti0.3Nb0.7O3 compositions by ABDELKEFI, Helmi, KHEMAKHEM, Hamadi, SIMON, Annie, DARRIET, Jacques

“…The Ba0.985Na0.015Ti0.985Nb0.015O3, Ba0.6Na0.4Ti0.6Nb0.4O3 and Ba0.3Na0.7Ti0.3Nb0.7O3 compositions of the (1 - x) BaTiO3-xNaNbO3 (BTNNx) system have been…”
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Study of the structural and electrical properties of the compound (Ba0.99Ca0.01)(Ti0.8−xZr0.2)MnxO3 for x = 0.25 by Khmiri, Ismail, Kriaa, Issa, Khemakhem, Hamadi

“…The material (Ba0.99Ca0.01)(Ti0.8−xZr0.2)MnxO3 for x = 0.25 % is obtained by a conventional solid-state reaction method. It is analyzed in terms of structure,…”
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The effect of Zn2+ and Nb5+ substitution on structural, dielectric, electrocaloric properties, and energy storage density of Ba0.95Ca0.05Ti0.95Zr0.05O3 ceramics by Abdmouleh, Hanen, Kriaa, Issa, Abdelmoula, Najmeddine, Sassi, Zina, Khemakhem, Hamadi

“…•The structural, vibrational, dielectric, ferroelectric, and electrocaloric properties were analysed for BCZTZN ceramics.•The Morphotropic phase boundary from…”
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Electrical conductivity and impedance spectroscopy studies of ceramic (Ba0.8Sr0.2)Ti0.95(Zn1/3Nb2/3)0.05O3 doped with Bi2O3 by Dhifallah, Nabil, Hehlen, Bernard, Khemakhem, Hamadi

“…Polycrystalline samples of (Ba0·8Sr0.2)1–3x/2BixTi0.95(Zn1/3Nb2/3)0.05O3 (BixBSTBZN) (x = 0.00, 0.10), were prepared by the solid state reaction method. The…”
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Relaxor behavior and dielectric properties of Ba1−xBi2x/3Zr0.15Ti0.85O3 solid solution by Bahri, Fathi, Khemakhem, Hamadi

“…•Ba1−xBi2x/3Zr0.15Ti0.85O3 (BBZT) solid solution ceramics have been prepared by the conventional solid-state reaction method.•The dielectric behaviors of BBZT…”
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Hyper‐Raman scattering study of the soft mode in relaxor ferroelectric (Ba 0.8 Sr 0.2 ) 0.925 Bi 0.05 Ti 0.95 (Zn 1/3 Nb 2/3 ) 0.05 O 3 by Dhifallah, Nabil, Hehlen, Bernard, Khemakhem, Hamadi

“…Abstract We report hyper‐Raman scattering measurements of the lowest transverse optic (TO) phonon branch in the relaxor Bi 0.05 ‐BSTZN in the paraelectric…”
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Enhanced structural, vibrational, and dielectric properties of (Ba0·95Ca0.05) (Ti0.95Zr0.05)1-x(Zn1/3Nb2/3)xO3 ceramics by Abdmouleh, Hanen, Kriaa, Issa, Abdelmoula, Najmeddine, Khemakhem, Hamadi

“…The (Ba0·95Ca0.05) (Ti0·95Zr0.05)1-x(Zn1/3Nb2/3)xO3 BCZTxZN compounds, were created using the widely adopted solid-state method. To assess the impact of (Zn,…”
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Sol-gel hydrothermal synthesis of lead-free BT nanoparticles for enhanced dielectric properties in PVDF nanocomposites by Turki, Olfa, Slimani, Ahmed, Boufi, Sami, Seveyrat, Laurence, Perrin, Veronique, Ben Hassen, Rached, Khemakhem, Hamadi

“…[Display omitted] In the present work BaTiO3 nanoparticles (NPs) with different sizes from 150 to 400 nm were prepared by sol–gel hydrothermal method at a…”
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