Publicaciones

• Article dans une revue

Experimental and DFT study of the structural, electronic, and thermoelectrical properties of Li3xLa2/3-xTiO3 (x = 0.125) ceramic leads free for battery applications

Hicham Kacimi-Naciri, Meriem Ben Zennou, Assia Mabrouk, Amine El Azizi, Mohamed Loutou, Mohammed Mansori, Rachid Amrousse, Nadia Faska, Ahmed Bachar

We synthesized Li3xLa2/3− xTiO3 (LLTO, x = 0.125) via solid-state sintering, yielding a structurally stable orthorhombic perovskite with high environmental compatibility. The resulting material was characterized experimentally through X-ray diffraction (XRD), dielectric measurements (permittivity...

Next Materials, 2026, 11, pp.101619. ⟨10.1016/j.nxmate.2026.101619⟩. ⟨hal-05583221⟩

• Article dans une revue

Comprehensive study of Al-doped BaTiO3 ceramics: From doping optimization to electromechanical enhancement for piezoelectric applications

Soufyane Satha, Mohamed Aymen Ben Achour, Mohamed Rguiti, Yannick Lorgouilloux, Christian Courtois

Journal of the European Ceramic Society, 2026, 46 (11), pp.118330. ⟨10.1016/j.jeurceramsoc.2026.118330⟩. ⟨hal-05582330⟩

• Article dans une revue

Synthesis and structural study of new phosphates: AMg2Fe(PO4)3 (A = Sr or Ba) with the α-CrPO4 structure type

Ahmed Ould Saleck, Abderrazzak Assani, Mohamed Saadi, Cyrille Albert-Mercier, Claudine Follet-Houttemane, Lahcen El Ammari

Single crystals of new orthophosphates AMg 2 Fe(PO 4 ) 3 (A = Sr or Ba) have been synthesized by solid-state reaction. From single crystal X-ray diffraction data, their corresponding crystal structures were solved in the orthorhombic system, with the Imma space group and unit cell parameters a = 10...

Comptes Rendus. Chimie, 2026, 29 (G1), pp.145-153. ⟨10.5802/crchim.442⟩. ⟨hal-05577899⟩

• Pré-publication, Document de travail

Scalable multitask Gaussian processes for complex mechanical systems with functional covariates

Razak Christophe Sabi Gninkou, Andrés F. López-Lopera, Franck Massa, Rodolphe Le Riche

Functional covariates arise in many scientific and engineering applications when model inputs take the form of time-dependent or spatially distributed profiles, such as varying boundary conditions or changing material behaviours. In addition, new practices in digital simulation require predictions...

2026. ⟨hal-05524247v2⟩

• Article dans une revue

First-principles theoretical study of pure and Ti, Zr, and Hf doped K0.5Na0.5NbO3: Structural, electronic, mechanical, and piezoelectric properties

Hicham Kacimi-Naciri, Mohamed Rguiti, Assia Mabrouk, Rachid Amrousse, Christian Courtois, Mohamed Aymen Ben Achour, Ahmed Bachar

Lead-free piezoelectric materials are gaining attention as environmentally sustainable alternatives to lead zirc­onate titanate (PZT)-based ceramics. Among these, potassium-sodium niobate (K0.5Na0.5NbO3, KNN) shows promising piezoelectric properties but faces challenges in densification and...

Ceramics International, 2026, 52 (7), pp.8607-8618. ⟨10.1016/j.ceramint.2026.01.059⟩. ⟨hal-05583201⟩

• Communication dans un congrès

Synthesis of doped biphasic calcium phosphate for bone substitutes.

Vincent Gillet, Marie Lasgorceix, Florian Jean, Anne Leriche, Stephane Hocquet

Among synthetic bone substitutes, calcium phosphate materials such as β-tricalcium phosphate (β-TCP, β-Ca₃(PO₄)₂) and hydroxyapatite (HA, Ca₁₀(PO₄)₆(OH)₂) are widely used due to their excellent biocompatibility and osteoconductive properties. However, these two phases exhibit different resorption...

19th European Inter-Regional Conference on Ceramics (CIEC 19), Feb 2026, Leoben, Austria. ⟨hal-05583051⟩

• Article dans une revue

Equivalence between VMO functions and plurisubharmonic functions with zero Lelong numbers

Séverine Biard, Jujie Wu

<div><p>We prove that a plurisubharmonic function on a domain in the complex Euclidean space is a locally VMO (Vanishing Mean Oscillation) function if and only if its Lelong number at each point vanishes. We also give a global version of this result when the boundary of the domain...

Mathematische Zeitschrift, 2026, 312 (2), pp.60. ⟨10.1007/s00209-026-03952-6⟩. ⟨hal-05478910⟩

• Article dans une revue

Experimental and DFT study of the structural, electronic, and thermoelectrical properties of Li3xLa2/3-xTiO3 (x = 0.125) ceramic leads free for battery applications

Hicham Kacimi-Naciri, Meriem Ben Zennou, Assia Mabrouk, Amine El Azizi, Mohamed Loutou, Mohammed Mansori, Rachid Amrousse, Nadia Faska, Ahmed Bachar

We synthesized Li3xLa2/3−xTiO3 (LLTO, x = 0.125) via solid-state sintering, yielding a structurally stable orthorhombic perovskite with high environmental compatibility. The resulting material was characterized experimentally through X-ray diffraction (XRD), dielectric measurements (permittivity...

Next Materials, 2026, 11, pp.101619. ⟨10.1016/j.nxmate.2026.101619⟩. ⟨hal-05488643⟩

• Article dans une revue

Optimization of explicit RKN schemes to minimize spurious reflections from shock wave propagation on non-uniform grids

Emmanuel Creusé, Mamadou N'Diaye, Juliette Venel, Cédric Hubert, Nicolas Leconte

The propagation of shock waves on non-uniform grids appears, for example, in some impact problems of the fast dynamics type, where a finer mesh can typically be employed in regions of interest, leading to mesh ratios that can range from 10 to 20 or even more. Unfortunately, unwanted spurious...

International Journal for Numerical Methods in Engineering, 2026, 127 (1). ⟨hal-05144415v2⟩

• Article dans une revue

Block-Additive Gaussian Processes under Monotonicity Constraints

Mathis Deronzier, Andrés F. López-Lopera, François Bachoc, Olivier Roustant, Jérémy Rohmer

We generalize the additive constrained Gaussian process framework to handle interactions between input variables while enforcing monotonicity constraints everywhere on the input space. The block-additive structure of the model is particularly suitable in the presence of interactions, while...

Statistics and Computing, 2026, 36 (1), pp.42. ⟨10.1007/s11222-025-10791-8⟩. ⟨hal-05441153⟩