000127913 001__ 127913
000127913 005__ 20241125101144.0
000127913 0247_ $$2doi$$a10.1002/smtd.202300647
000127913 0248_ $$2sideral$$a135018
000127913 037__ $$aART-2023-135018
000127913 041__ $$aeng
000127913 100__ $$aMuzzi, Beatrice
000127913 245__ $$aDefect-Engineering by Solvent Mediated Mild Oxidation as a Tool to Induce Exchange Bias in Metal Doped Ferrites
000127913 260__ $$c2023
000127913 5060_ $$aAccess copy available to the general public$$fUnrestricted
000127913 5203_ $$aThe crystal site occupancy of different divalent ions and the induction of lattice defects represent an additional tool for modifying the intrinsic magnetic properties of spinel ferrites nanoparticles. Here, the relevance of the lattice defects is demonstrated in the appearance of exchange‐bias and in the improvement of the magnetic properties of doped ferrites of 20 nm, obtained from the mild oxidation of core@shell (wüstite@ferrite) nanoparticles. Three types of nanoparticles (Fe0.95O@Fe3O4, Co0.3Fe0.7O@Co0.8Fe2.2O4 and Ni0.17Co0.21Fe0.62O@Ni0.4Co0.3Fe2.3O4) are oxidized. As a result, the core@shell morphology is removed and transformed in a spinel‐like nanoparticle, through a topotactic transformation. This study shows that most of the induced defects in these nanoparticles and their magnetic properties are driven by the inability of the Co(II) ions at the octahedral sites to migrate to tetrahedral sites, at the chosen mild oxidation temperature. In addition, the appearance of crystal defects and antiphase boundaries improves the magnetic properties of the starting compounds and leads to the appearance of exchange bias at room temperature. These results highlight the validity of the proposed method to impose novel magnetic characteristics in the technologically relevant class of nanomaterials such as spinel ferrites, expanding their potential exploitation in several application fields.
000127913 536__ $$9info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 823717-ESTEEM3
000127913 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000127913 590__ $$a10.7$$b2023
000127913 592__ $$a3.107$$b2023
000127913 591__ $$aCHEMISTRY, PHYSICAL$$b26 / 178 = 0.146$$c2023$$dQ1$$eT1
000127913 593__ $$aMaterials Science (miscellaneous)$$c2023$$dQ1
000127913 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b19 / 141 = 0.135$$c2023$$dQ1$$eT1
000127913 593__ $$aChemistry (miscellaneous)$$c2023$$dQ1
000127913 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b47 / 439 = 0.107$$c2023$$dQ1$$eT1
000127913 594__ $$a17.4$$b2023
000127913 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000127913 700__ $$aAlbino, Martin
000127913 700__ $$aPetrecca, Michele
000127913 700__ $$aInnocenti, Claudia
000127913 700__ $$ade Julián Fernández, César
000127913 700__ $$aBertoni, Giovanni
000127913 700__ $$0(orcid)0000-0003-0681-8260$$aIbarra, M. Ricardo$$uUniversidad de Zaragoza
000127913 700__ $$aChristensen, Mogens
000127913 700__ $$aAvdeev, Maxim
000127913 700__ $$0(orcid)0000-0003-0602-492X$$aMarquina, Clara
000127913 700__ $$aSangregorio, Claudio
000127913 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000127913 773__ $$g(2023), 2300647 [12 pp.]$$tSMALL METHODS$$x2366-9608
000127913 8564_ $$s6344591$$uhttps://zaguan.unizar.es/record/127913/files/texto_completo.pdf$$yVersión publicada
000127913 8564_ $$s2460584$$uhttps://zaguan.unizar.es/record/127913/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000127913 909CO $$ooai:zaguan.unizar.es:127913$$particulos$$pdriver
000127913 951__ $$a2024-11-22-12:03:38
000127913 980__ $$aARTICLE