Siwar Walha
University of Sfax
30 Papers
155 Citations
Siwar Walha is an academic researcher from University of Sfax. The author has contributed to research in topics: Crystal structure & Hydrogen bond. The author has an hindex of 7, co-authored 29 publications.
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Papers
Structural, atomic Hirschfeld surface, magnetic and magnetocaloric properties of SmNi5 compound
TL;DR: In this article, the magnetic properties and magnetocaloric effect (MCE) have been established by the magnetization and isothermal magnetization of different temperature measurements, which shows a magnetic transition from ferromagnetic to paramagnetic state at the Curie temperature T C ǫ = 29 K.
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The isothermal section phase diagram of the Sm-Fe-Ni ternary system at 800 °C
TL;DR: In this paper, the ternary Sm-Fe-Ni system was established in the whole concentration range, by means of powder X-ray diffraction and scanning electron microscopy, and all measured compositions and unit-cell refinements were performed at room temperature from quenched samples annealed at 800°C for one week.
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Isothermal section of the Er–Fe–Al ternary system at 800 °C
TL;DR: In this paper, the phase diagram is characterized by the formation of five intermediate phases, ErFe 12− x Al x with 5.74 ǫ x  4.5  5  6  7  8  9.
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Synthesis and Crystal Structures of Various Phases of the Microporous Three-Dimensional Coordination Polymer [Zr(OH)2(C2O4)]n
Monia Hamdouni,Siwar Walha,Ahlem Kabadou,Carine Duhayon,Carine Duhayon,Jean-Pascal Sutter,Jean-Pascal Sutter +6 more
TL;DR: A homometallic Zr(IV)-oxalate three-dimensional coordination polymer of formula [Zr(OH)2(C2O4)·0.5H2O] is reported in this paper.
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Experimental Investigation of the Isothermal Section at 800 °C of the Nd-Fe-Co Ternary System
N. Bouchaala,N. Bouchaala,M. Jemmali,M. Jemmali,K. Nouri,K. Nouri,Siwar Walha,A. Ben Salah,Lotfi Bessais +8 more
TL;DR: The phase equilibrium of the ternary Nd-Fe-Co system at 800°C was investigated by means of powder x-ray diffraction and scanning electron microscopy-energy dispersive xray spectroscopy.
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