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Iron oxidation state in La0.7Sr1.3Fe0.7Ti0.3O4 and La0.5Sr1.5Fe0.5Ti0.5O4 layered perovskites: Magnetic properties

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dc.contributor Казанский федеральный университет
dc.contributor.author Gavrilova Tatiana Pavlovna
dc.contributor.author Yagfarova Venera Rasimovna
dc.contributor.author Dieva Yuliya Alekseevna
dc.contributor.author Yatsyk Ivan Vladimirovich
dc.contributor.author Gilmutdinov Ildar Faritovich
dc.contributor.author Cherosov Mikhail Andreevich
dc.contributor.author Vagizov Farit Gabdulhakovich
dc.contributor.author Chupakhina Tatyana Ivanovna
dc.contributor.author Eremina Rushana Mihajlovna
dc.date.accessioned 2021-05-11T09:06:49Z
dc.date.available 2021-05-11T09:06:49Z
dc.date.issued 2021
dc.identifier.citation Iron oxidation state in La0.7Sr1.3Fe0.7Ti0.3O4 and La0.5Sr1.5Fe0.5Ti0.5O4 layered perovskites: Magnetic properties / T.P. Gavrilova [et al.] // Journal of Physics and Chemistry of Solids. - 2021. - Vol. 153. - P.109994-9.
dc.identifier.issn 0022-3697
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/163605
dc.description.abstract La0.5Sr1.5Fe0.5Ti0.5O4 and La0.7Sr1.3Fe0.7Ti0.3O4 solid solutions with the layered perovskite structure were synthesized using a solid state method. Structural properties of obtained samples were characterized using X-ray diffraction and X-ray fluorescence analyses. Magnetic properties were investigated using magnetometry, electron spin resonance (ESR) and M¨ossbauer spectroscopy methods. Based on magnetization and ESR measurements it was suggested the presence of Fe4+ ions in addition to trivalent iron ions that was exactly confirmed by M¨ossbauer spectroscopy investigations. Based on all experimental results one can suggest the presence of the electronic phase separation in the investigated samples - the simultaneous existence of the paramagnetic phase and magnetically correlated regions, which form due to the mixed-valence iron ions. So the paramagnetic phase with strong antiferromagnetic correlation exists in both samples, while the second phase is ferromagnetically and ferrimagnetically correlated regions in La0.5Sr1.5Fe0.5Ti0.5O4 and La0.7Sr1.3Fe0.7Ti0.3O4, respectively.
dc.language.iso en
dc.relation.ispartofseries Journal of Physics and Chemistry of Solids
dc.rights открытый доступ
dc.subject Layered perovskite
dc.subject Electronic phase separation
dc.subject Fe4+ Magnetization
dc.subject Electron spin resonance
dc.subject Mossbauer spectroscopy
dc.subject.other Физика
dc.title Iron oxidation state in La0.7Sr1.3Fe0.7Ti0.3O4 and La0.5Sr1.5Fe0.5Ti0.5O4 layered perovskites: Magnetic properties
dc.type Article
dc.contributor.org Институт физики
dc.description.pages 109994-1-109994-9
dc.relation.ispartofseries-volume 153
dc.pub-id 250435
dc.identifier.doi 10.1016/j.jpcs.2021.109994


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