Publications

• Article dans une revue

First-principles analysis of Sr-doped BaTiO3 perovskites’ structural, optical, and thermoelectric properties

Hicham Kacimi-Naciri, Siham Malki, Meriem Ben Zennou, Assia Mabrouk, Mohamed Rguiti, Rachid Amrousse, Nadia Faska, Ahmed Bachar

The influence of strontium (Sr) incorporation on the crystal structure of barium titanate (BaTiO 3 ) has been extensively studied using density functional theory (DFT) calculations with the WIEN2k package and the GGA-PBE method, resulting in significant improvements in its optical and transport…

Results in Physics, 2026, 86, pp.108682. ⟨10.1016/j.rinp.2026.108682⟩. ⟨hal-05625182⟩

• Pré-publication, Document de travail

Blow-up analysis and a priori bounds for NLS equations on metric graphs

Pablo Carrillo, Colette De Coster, Damien Galant, Louis Jeanjean, Christophe Troestler

We consider, on a connected metric graph $\mathcal{G}$, a family of nonlinear Schrödinger equations $$ -u'' + W_n(x) u + λ_n u = ρ_n(x)|u|^{p-2}u, \quad n \in \mathbb{N}. \qquad (*) $$ We assume that $p > 2$, $(W_n)$, $(ρ_n) \subseteq L^{\infty}(\mathcal{G})$ with $ρ_n \geq 0$, $|…

2026. ⟨hal-05613123⟩

• 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⟩

• Poster de conférence

Influence du dopage (Ti, Zr, Hf) sur les propriétés structurales et électromécaniques de KNN

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

Les matériaux piézoélectriques sans plomb constituent une alternative aux PZT largement utilisées. Cette étude, basée sur la DFT (Density Fonctional Theory), analyse les propriétés structurales, électroniques, mécaniques et piézoélectriques de K0.5Na0.5NbO3 pur et dopé par Ti, Zr et Hf. Les…

Mardi des chercheurs, Mar 2026, MONS, Belgium. ⟨hal-05583561⟩

• 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⟩

• Article dans une revue

Sex-specific lymphatic responses to estrogen shape atherosclerosis in high-risk mice

Mona Mesples, Élizabeth Lacroix, Nolwenn Tessier, Maya Farhat, Andreea Milasan, Sara Babran, Cristina Fernandez, Tally Latendresse, Justin Benoit, Valérie Long, Julie Guillemette, Sami El Khakani, Azadeh Alikashani, Charles-Alexandre Leblanc, Marie-Ève Higgins, Vanessa Durocher-Granger, Céline Fiset, Catherine Martel

Introduction Atherosclerosis, the cholesterol-driven inflammatory process underlying cardiovascular disease (CVD), remains the leading cause of death in high-income countries despite major advances in risk factor management. This underscores the urgent need for therapies that directly target plaque…

Frontiers in Cardiovascular Medicine, 2026, 13, pp.1699372. ⟨10.3389/fcvm.2026.1699372⟩. ⟨hal-05648779⟩

• 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⟩