20.500.12556/RUL-180957 Quasistatic reorientation of ferromagnetic nematic colloids in a slowly rotating magnetic field We report the development of ferromagnetic nematic colloids using a two-step protocol tailored for investigating emergent magnetoelastic phenomena. First, we prepared a ferromagnetic nematic liquid crystal by dispersing well-defined magnetic nanoparticles into a conventional nematic host, ensuring magnetic ordering while preserving the characteristic director field. Subsequently, microparticles were suspended within this ferromagnetic nematic matrix that generates elastic dipoles and quadrupoles in the director field. We show that a slowly rotating magnetic field induces surface domain $\pi$ walls that quasistatically reorient the defects and linear colloidal assemblies—an effect that is absent in ordinary nematic liquid crystals lacking spontaneous magnetization. The results are interpreted using the Landau–de Gennes Q-tensor model, extended to capture the coupling between nematic and magnetic characteristics of ferromagnetic nematic liquid crystals. This composite system enables the exploration of novel elastic and magneto-optic interactions at the interface of liquid crystalline order and nanoscale magnetism, broadening the experimental landscape for both fundamental studies and potential applications in adaptive materials that involve colloidal composites. liquid crystals ferromagnetic liquid crystals magneto-optical effect elastic deformations tekoči kristali feromagnetni tekoči kristali magneto-optični pojav elastične deformacije true false true Angleški jezik Slovenski jezik Članek v reviji 2026-03-20 12:18:20 2026-03-20 12:18:21 2026-04-14 04:36:10 0000-00-00 00:00:00 2026 0 0 Str. 034407-1-034407-11 iss. 3 Vol. 10 2026 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 538.9 2475-9953 10.1103/9rsl-fjvx 271757827 MK10435.pdf MK10435.pdf 1 95B09A416899BB18647CBB721043BF69 504940c79fc5925146346287865e75db62cab849f4ba0c0d1a07f533cfcada50 0a074d01-36fa-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=232350 https://journals.aps.org/prmaterials/abstract/10.1103/9rsl-fjvx 0 ab1b4611-2451-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=230985 Fakulteta za matematiko in fiziko 0 0 0