000075840 001__ 75840
000075840 005__ 20201113085628.0
000075840 0247_ $$2doi$$a10.1103/PhysRevB.98.104422
000075840 0248_ $$2sideral$$a108379
000075840 037__ $$aART-2018-108379
000075840 041__ $$aeng
000075840 100__ $$0(orcid)0000-0002-9706-3272$$aBlasco, J.$$uUniversidad de Zaragoza
000075840 245__ $$aStructural properties of charge disproportionation and magnetic order in Sr(2/3)Ln(1/3)FeO(3) (Ln=La, Pr, and Nd)
000075840 260__ $$c2018
000075840 5060_ $$aAccess copy available to the general public$$fUnrestricted
000075840 5203_ $$aThe structural properties and the magnetic ground state of Sr(2/3)Ln(1/3)FeO(3) (Ln = La, Pr, Nd) samples were studied by means of synchrotron x-ray powder diffraction, neutron powder diffraction, and Mossbauer spectroscopy. All samples exhibit a metal-insulator-like transition coupled to a magnetic arrangement at a critical temperature, T-MI. The diffraction techniques reveal strong structural changes at T-MI that lead to new cells with reduced symmetry at low temperature. The new symmetry of the low-temperature phase has been determined for all compounds. The space groups are P (3) over bar c1 for La-based compound and A2/n for the rest of samples. The high-resolution x-ray patterns detected superstructure peaks that can be accounted for by a small charge disproportionation between two nonequivalent Fe sites in the low-temperature phase explained in terms of a charge density wave that propagates along one of the body diagonals of the primitive cubic cell of these compounds. Our results clearly reveal that a full charge disproportionation of Fe4+ into Fe3+ and Fe5+ is not produced. We have determined the magnetic ordering of these samples exhibiting an antiferromagnetic structure with a sixfold periodicity with respect to the primitive cubic structure. The magnetic group accounting for the magnetic arrangements was obtained by a symmetry analysis and it is C2/c (15.85) for all samples but with different unit cell depending on the type of FeO6 tilts. The collinear ordering of Fe moments is established perpendicular to the charge density wave (along the body diagonal of the primitive cubic cell) and also perpendicular to the unique monoclinic axis.
000075840 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2014-54425-R$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68760-C2-1
000075840 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000075840 592__ $$a1.502$$b2018
000075840 593__ $$aElectronic, Optical and Magnetic Materials$$c2018$$dQ1
000075840 593__ $$aCondensed Matter Physics$$c2018$$dQ1
000075840 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000075840 700__ $$aRodriguez-Velamazan, J.A.
000075840 700__ $$aGarcia, J.
000075840 700__ $$0(orcid)0000-0002-9029-1977$$aSubias, G.$$uUniversidad de Zaragoza
000075840 700__ $$0(orcid)0000-0003-4239-2949$$aPiquer, C.$$uUniversidad de Zaragoza
000075840 700__ $$aCuartero, V.
000075840 700__ $$0(orcid)0000-0003-2006-2594$$aSanchez, M.C.$$uUniversidad de Zaragoza
000075840 700__ $$0(orcid)0000-0002-6425-024X$$aStankiewicz, J.$$uUniversidad de Zaragoza
000075840 7102_ $$10$$2X$$aUniversidad de Zaragoza$$bServ.Gral. Apoyo Investigación$$cServicios. Div.Caract.Físi.Quí
000075840 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000075840 773__ $$g98, 10 (2018), 104422 [12 pp]$$pPhys. Rev. B$$tPHYSICAL REVIEW B$$x2469-9950
000075840 8564_ $$s3150180$$uhttps://zaguan.unizar.es/record/75840/files/texto_completo.pdf$$yVersión publicada
000075840 8564_ $$s24675$$uhttps://zaguan.unizar.es/record/75840/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000075840 909CO $$ooai:zaguan.unizar.es:75840$$particulos$$pdriver
000075840 951__ $$a2020-11-13-08:47:30
000075840 980__ $$aARTICLE