Exchange bias associated with phase separation in the Nd2/3Ca1/3MnO3 manganite

Fertman, E. L.; Dolya, S. N.; Desnenko, V. A.; Kajňaková, M.; Feher, A.

doi:10.1063/1.4865563

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…It is worth noting that one should expect the proximity effects, namely, the exchange bias in all systems where nanoscale regions with different magnetic orders coexist. For example, such effects were observed in phase-separated manganites and cobaltites (see work [36] and the references therein).…”

Section: Discussionmentioning

confidence: 94%

Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Golosovsky¹,

Vakhrushev²,

García-Muñoz³

et al. 2015

J. Phys.: Condens. Matter

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Neutron diffraction studies performed on the solid solution of (BiFeO(3))(1-x)(PbTiO(3))(x) reveal a mixture of two nanoscale phases with different crystal structures: a rhombohedral BiFeO(3)-based phase and a tetragonal PbTiO3-based phase. The ratio of Fe(3)+ and Ti(4)+ ions in the two phases is practically constant; only the proportion of the phases changes. The magnetic moments in the BiFeO(3)-based phase, in contrast to BiFeO(3), deviate from the basal plane. The temperature evolutions of the spin components along the hexagonal axis and within the perpendicular plane are different, leading to a spin re-orientation transition. The antiferromagnetic order in the PbTiO(3)-based phase corresponds to a simple structure with the propagation vector (1/2, 1/2, 1/2). The temperature dependence of the antiferromagnetic moment in the tetragonal phase at x = 0.5 indicates a canted antiferromagnetic order and a net ferromagnetic moment. A strong magnetic coupling between the two constituting phases due to the nanoscale character of the phases and well-developed interface between nanoparticles has been observed. The system of (BiFeO(3))(1-x)(PbTiO(3))(x) demonstrates an interesting scenario, where the proximity effects in the unstable system play a crucial role in the appearance of the unusual magnetic properties.

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Section: Discussionmentioning

confidence: 94%

Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Golosovsky¹,

Vakhrushev²,

García-Muñoz³

et al. 2015

J. Phys.: Condens. Matter

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“…Recently, the EB effect was observed in phase separated perovskite manganites with ferromagnetic domains and antiferromagnetic domains coupled at the domain boundary . Thus, the phase separation induced exchange bias in perovskite manganites provides an unprecedented potential for future magnetic memories devices in chemically uniform materials (that is “homointerface”) …”

Section: Introductionmentioning

confidence: 99%

Exchange Bias Effect in Epitaxial LaMnO_3+δ Film Induced by Electron Beam Irradiation

Xue

Ding

Lai

et al. 2019

Adv Materials Inter

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Phase separation in the perovskite manganites of R1‐xAxMnO3 (R = trivalent lanthanide cation and A = divalent alkaline‐earth cation) can induce novel phenomena associated with the interfacial interactions. Here, the occurrence of phase separation and unexpected exchange bias induced by electron beam irradiation (EBI) in the epitaxial LaMnO3+δ (LMO) thin films is reported. The transformation from Mn4+ ion to Mn3+ ion originating from the electron's reducibility, enhances the Mn3+–Mn3+ antiferromagnetic superexchange interaction, resulting in phase separation, namely, the coexistence of ferromagnetic matrix and antiferromagnetic clusters. The formation of the antiferromagnetic phase in the LMO film is closely related to the increase of the out‐of‐plane lattice constant and the decrease of Curie temperature after EBI. The unexpected exchange bias effect results from the interfacial interaction between the ferromagnetic matrix and antiferromagnetic clusters, triggered by EBI in LMO film. The discovery of exchange bias induced by EBI shed promising light on achieving the tunable exchange bias effect in spintronic devices for single‐phase films.

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Antiferromagnetic exchange spring as the reason of exchange bias training effect

Dobrynin

Maccherozzi

Dhesi

et al. 2014

Applied Physics Letters

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We observe recovery of the exchange bias training effect in a Co/CoO bilayer after warming the sample up to the blocking temperature and cooling it back to a low measuring temperature in zero magnetic field. Variation of the magnitude of X-ray magnetic linear dichroism in the sample for the system in the high unidirectional anisotropy state (after field cooling) and in the low unidirectional anisotropy state (after training) suggests rearrangement of antiferromagnetic structure during the initial field cycling in exchange biased state. Our results suggest formation of an antiferromagnetic exchange spring at the frustrated ferromagnetic–antiferromagnetic interface being the reason of the training effect.

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Exchange bias associated with phase separation in the Nd2/3Ca1/3MnO3 manganite

Cited by 5 publications

References 26 publications

Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Exchange Bias Effect in Epitaxial LaMnO_3+δ Film Induced by Electron Beam Irradiation

Antiferromagnetic exchange spring as the reason of exchange bias training effect

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Exchange bias associated with phase separation in the Nd2/3Ca1/3MnO3 manganite

Cited by 5 publications

References 26 publications

Neutron diffraction study of the (BiFeO3)1−x(PbTiO3)xsolid solution: nanostructured multiferroic system

Neutron diffraction study of the (BiFeO3)1−x(PbTiO3)xsolid solution: nanostructured multiferroic system

Exchange Bias Effect in Epitaxial LaMnO3+δ Film Induced by Electron Beam Irradiation

Antiferromagnetic exchange spring as the reason of exchange bias training effect

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Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Neutron diffraction study of the (BiFeO₃)_1−x(PbTiO₃)_xsolid solution: nanostructured multiferroic system

Exchange Bias Effect in Epitaxial LaMnO_3+δ Film Induced by Electron Beam Irradiation