Results 61 to 70 of about 15,486 (198)

Is There A Pure Electronic Ferroelectric?

open access: yesAdvanced Electronic Materials, Volume 12, Issue 3, 4 February 2026.
The search for faster, more reliable ferroelectric materials has shifted from traditional lattice‐driven ferroelectrics, which rely on slow ionic displacements, to electronic ferroelectrics, where polarization is governed by electronic ordering. This shift enables ultrafast switching, low‐field operation, and resistance to fatigue.
Xudong Wang   +8 more
wiley   +1 more source

Topotactic Phase Transition in Epitaxial La0.7Sr0.3MnO3‐δ Films Induced by Oxygen Getter Assisted Thermal Annealing

open access: yesSmall, Volume 22, Issue 7, 2 February 2026.
The perovskite to brownmillerite topotactic phase transition in La0.7Sr0.3MnO3‐δ thin films is achieved through a simple and efficient thermal vacuum annealing that employs bulk aluminum as an active oxygen getter. STEM reveals surface segregation and cation redistribution, while EELS identifies distinct manganese oxidation states across different ...
Chenyang Yin   +14 more
wiley   +1 more source

Scaling Behavior and Beyond Equilibrium in the Hexagonal Manganites

open access: yesPhysical Review X, 2012
We show that the improper ferroelectric phase transition in the multiferroic hexagonal manganites displays appropriate symmetry-breaking characteristics for testing the Kibble-Zurek mechanism originally proposed to describe early-universe phase ...
S. M. Griffin   +5 more
doaj   +1 more source

Magnon Broadening Effect by Magnon-Phonon Interaction in Colossal Magnetoresistance Manganites

open access: yes, 1999
In order to study the magnetic excitation behaviors in colossal magnetoresistance manganites, a magnon-phonon interacting system is investigated. Sudden broadening of magnon linewidth is obtained when a magnon branch crosses over an optical phonon branch.
Asamitsu A.   +23 more
core   +1 more source

Electronic and Magnetic Reconstructions in Manganite Superlattices

open access: yes, 2013
We investigate the electronic reconstruction at the interface between ferromagnetic metallic (FM) and antiferromagnetic insulating (AFI) manganites in superlattices using a two-orbital double-exchange model including superexchange interactions, Jahn ...
Kampf, Arno P., Pradhan, Kalpataru
core   +1 more source

Phase equilibrium in two orbital model under magnetic field

open access: yes, 2006
The phase equilibrium in manganites under magnetic field is studied using a two orbital model, based on the equivalent chemical potential principle for the competitive phases.
Dagotto E   +6 more
core   +1 more source

Magnetocaloric effect in manganites: metamagnetic transitions for magnetic refrigeration [PDF]

open access: yes, 2010
We present a study of the magnetocaloric effect in La5/8-yPryCa3/8MnO3 (y=0.3) and Pr0.5Ca0.09Sr0.41MnO3 manganites. The low temperature state of both ystems is the result of a competition between the antiferromagnetic and ferromagnetic phases.
Ghivelder, L.   +5 more
core   +2 more sources

Resistivity of Mixed-Phase Manganites [PDF]

open access: yesPhysical Review Letters, 2001
4 pages, 4 eps ...
Mayr, Matthias   +5 more
openaire   +3 more sources

Near‐Field Optical Detection of Defect‐Stabilized Metallic Islands at the Verwey Transition in Fe3O4

open access: yesAdvanced Functional Materials, Volume 36, Issue 1, 2 January 2026.
Nanoscale metallic islands emerging across the Verwey transition in thin films of Fe3O4 are imaged using near‐field optical microscopy from mid‐infrared to terahertz frequencies. Recurring across thermal cycles, these disorder‐stabilized islands exhibit distinct transition temperatures.
Kajal Tiwari   +4 more
wiley   +1 more source

Epitaxial La0.5Sr0.5MnO3‐δ Bipolar Memristive Devices with Tunable and Stable Multilevel States

open access: yesAdvanced Materials Interfaces, 2023
Valence change memories are novel data storage devices in which the resistance is determined by a reversible redox reaction triggered by voltage. The oxygen content and mobility within the active materials of these devices play a crucial role in their ...
Carlos Moncasi   +8 more
doaj   +1 more source

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