Results 31 to 40 of about 22,234 (272)

Microscopic origin of Magnetic Ferroelectrics in Nonlinear Multiferroics [PDF]

open access: yes, 2007
A simple but general microscopic mechanism to understand the interplay between the electric and magnetic degrees of freedom is developed. Within this mechanism, the magnetic structure generates an electric current which induce an counterbalance electric ...
A. Sirenko   +5 more
core   +3 more sources

Ferroelectricity induced by interatomic magnetic exchange interaction [PDF]

open access: yes, 2012
Multiferroics, where two or more ferroic order parameters coexist, is one of the hottest fields in condensed matter physics and materials science[1-9].
A Chen   +42 more
core   +2 more sources

Designing switchable near room-temperature multiferroics via the discovery of a novel magnetoelectric coupling

open access: yesNew Journal of Physics, 2018
Magnetoelectric (ME) coupling is the key ingredient for realizing the cross-control of magnetism and ferroelectricity in multiferroics. However, multiferroics are not only rare, especially at room-temperature, in nature but also the overwhelming majority
J S Feng   +3 more
doaj   +1 more source

Designing Asymmetric Multiferroics with Strong Magnetoelectric Coupling [PDF]

open access: yesPhys. Rev. B 90, 104409 (2014), 2014
Multiferroics offer exciting opportunities for electric-field control of magnetism. Unfortunately, single-phase multiferroics suitable for such applications at room temperature has not been discovered. Here, we propose the concept of a new type of multiferroics, namely, "asymmetric multiferroic".
arxiv   +1 more source

Multiferroic Rhodium Clusters

open access: yesPhysical Review Letters, 2014
Simultaneous magnetic and electric deflection measurements of rhodium clusters (Rh(N), 6 ≤ N ≤ 40) reveal ferromagnetism and ferroelectricity at low temperatures, while neither property exists in the bulk metal. Temperature-independent magnetic moments (up to 1 μ(B) per atom) are observed, and superparamagnetic blocking temperatures up to 20 K ...
Ma, L.   +4 more
openaire   +4 more sources

Spectroscopy of RFe3(BO3)4 multiferroics: phase transitions, spin-phonon interaction, coupled electron-phonon modes

open access: yesEPJ Web of Conferences, 2017
Review of the work performed in the author’s laboratory is given, on high-resolution Fourier spectroscopy studies of multiferroics from the family of rare-earth iron borates with the structure of the natural mineral huntite.
Popova M.N.
doaj   +1 more source

Magnetodielectric effect without multiferroic coupling [PDF]

open access: yesApplied Physics Letters 88, 102902 (2006), 2005
The existence of a magnetodielectric (magnetocapacitance) effect is often used as a test for multiferroic behavior in new material systems. However, strong magnetodielectric effects can also be achieved through a combination of magnetoresistance and the Maxwell-Wagner effect, unrelated to multiferroic coupling.
arxiv   +1 more source

Dynamics of Multiferroic Domain Wall in Spin-Cycloidal Ferroelectric DyMnO$_{3}$ [PDF]

open access: yesPhys. Rev. Lett. 102, 057604 (2009), 2009
We report the dielectric dispersion of the giant magnetocapacitance (GMC) in multiferroic DyMnO$_{3}$ over a wide frequency range. The GMC is found to be attributable not to the softened electromagnon but to the electric-field-driven motion of multiferroic domain wall (DW).
arxiv   +1 more source

Site-specific spectroscopic measurement of spin and charge in (LuFeO3) m /(LuFe2O4)1 multiferroic superlattices

open access: yesNature Communications, 2020
Understanding the inner workings of complex magnetoelectric multiferroics remains a challenge, as macroscopic techniques characterize average responses rather than the role of individual iron centers.
Shiyu Fan   +12 more
doaj   +1 more source

Magnetic and Dielectric Properties of La and Ni Co-substituted BiFeO3 Nanoceramics

open access: yesFrontiers in Physics, 2020
The increasing plead for the realization of ultra-fast, miniaturized, compact, and ultra-low power consumption in electronic as well as spintronic devices has propelled the quest for novel multiferroic materials that efficiently enable voltage control of
Amit Srivastava   +6 more
doaj   +1 more source

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