000164205 001__ 164205
000164205 005__ 20251127172931.0
000164205 0247_ $$2doi$$a10.1016/j.jallcom.2025.185048
000164205 0248_ $$2sideral$$a146405
000164205 037__ $$aART-2025-146405
000164205 041__ $$aeng
000164205 100__ $$0(orcid)0000-0002-9706-3272$$aBlasco, J.
000164205 245__ $$aExploring a route to induce ferromagnetism on Sr3Sn2O7 by co-doping with non-Jahn-Teller-distorted Mn3+ and La3+ cations
000164205 260__ $$c2025
000164205 5060_ $$aAccess copy available to the general public$$fUnrestricted
000164205 5203_ $$aWe here explore a route to induce a ferromagnetic ground state on the Ruddlesden-Popper phases Sr3-xLaxSn2-xMnxO7 replacing Sn by Mn up to x = 1.25. Samples with low Mn concentration (x ≤ 0.1) adopt the polar A21am space group, consistent with previously reported ferroelectric behavior. For higher Mn concentrations (x ≥ 0.25) the samples adopt the centrosymmetric space group Amam due to the suppression of specific rotational modes. X-ray absorption spectroscopy confirmed the presence of a Mn3+ ion in all samples though it is not Jahn-Teller distorted. An undistorted MnO6 octahedral local structure is reported instead, with Debye-Waller factors for the Mn-O bond length increasing as Mn content does, due to the disorder induced in the Sn/Mn sublattice and the rising of rumpling distortions (expansion of the perovskite bilayer coupled with shrinkage of the rock salt layer). All the Sr3-xLaxSn2-xMnxO7 samples exhibit ferromagnetic correlations. While Mn³ ⁺ cations in low Mn-content samples (x ≤ 0.25) agree with spin-only contributions, higher doping levels deviate from this interpretation, possibly due to the enhancement of magnetic interactions. At 5 K, all samples exhibit spontaneous magnetization which increases with Mn content, but the Mn³ ⁺ magnetic sublattice is not fully polarized. Neutron diffraction confirmed the absence of long-range magnetic order and AC susceptibility analysis indicates a cluster-glass magnetic state due to structural disorder and competing interactions. Compared to simple perovskites, our results indicate that the rock salt layer plays a key role in suppressing long-range ferromagnetic order, making it particularly challenging to achieve multiferroic behavior by doping hybrid improper ferroelectrics with magnetic cations.
000164205 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E11-23R$$9info:eu-repo/grantAgreement/ES/DGA/E12-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-124734OB-C21$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-124734OB-C22$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S
000164205 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000164205 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000164205 700__ $$0(orcid)0000-0002-8021-8709$$aCuartero, V.$$uUniversidad de Zaragoza
000164205 700__ $$0(orcid)0000-0001-8303-932X$$aLafuerza, S.
000164205 700__ $$aGracia, D.
000164205 700__ $$0(orcid)0000-0001-8224-329X$$aPuente-Orench, I.
000164205 700__ $$0(orcid)0000-0002-8505-5232$$aRodríguez-Velamazán, J.A.
000164205 700__ $$aHerrero-Martín, J.
000164205 700__ $$aTorchio, R.
000164205 700__ $$aMathon, O.
000164205 700__ $$0(orcid)0000-0002-9029-1977$$aSubías, G.
000164205 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000164205 773__ $$g1048 (2025), 185048 [9 pp.]$$pJ. alloys compd.$$tJOURNAL OF ALLOYS AND COMPOUNDS$$x0925-8388
000164205 8564_ $$s1560180$$uhttps://zaguan.unizar.es/record/164205/files/texto_completo.pdf$$yVersión publicada
000164205 8564_ $$s2436891$$uhttps://zaguan.unizar.es/record/164205/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000164205 909CO $$ooai:zaguan.unizar.es:164205$$particulos$$pdriver
000164205 951__ $$a2025-11-27-15:17:03
000164205 980__ $$aARTICLE