scholarly journals Large linear magnetoelectric effect and field-induced ferromagnetism and ferroelectricity in DyCrO4

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Xudong Shen ◽  
Long Zhou ◽  
Yisheng Chai ◽  
Yan Wu ◽  
Zhehong Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Spin Structure ◽  
Magnetoelectric Effect ◽  
Electric Polarization ◽  
Metamagnetic Transition ◽  
Ferromagnetic Component ◽  
Antiferromagnetic Structure ◽  
Field Control ◽  
Ferromagnetic Magnetization

Abstract All the magnetoelectric properties of scheelite-type DyCrO4 are characterized by temperature- and field-dependent magnetization, specific heat, permittivity, electric polarization, and neutron diffraction measurements. Upon application of a magnetic field within ±3 T, the nonpolar collinear antiferromagnetic structure leads to a large linear magnetoelectric effect with a considerable coupling coefficient. An applied electric field can induce the converse linear magnetoelectric effect, realizing magnetic field control of ferroelectricity and electric field control of magnetism. Furthermore, a higher magnetic field (>3 T) can cause a metamagnetic transition from the initially collinear antiferromagnetic structure to a canted structure, generating a large ferromagnetic magnetization up to 7.0 μB f.u.−1. Moreover, the new spin structure can break the space inversion symmetry, yielding ferroelectric polarization, which leads to coupling of ferromagnetism and ferroelectricity with a large ferromagnetic component.

Low-Magnetic-Field Control of Electric Polarization Vector in a Helimagnet

Science ◽  
2008 ◽  
Vol 319 (5870) ◽  
pp. 1643-1646 ◽  
Author(s):  
S. Ishiwata ◽  
Y. Taguchi ◽  
H. Murakawa ◽  
Y. Onose ◽  
Y. Tokura
Keyword(s):  
Magnetic Field ◽  
Polarization Vector ◽  
Electric Polarization ◽  
Field Control ◽  
Low Magnetic Field

scholarly journals Electric Field-Induced Magnetization Reversal of Multiferroic Nanomagnet

2021 ◽  
Author(s):  
Jiahao Liu ◽  
Liang Fang
Keyword(s):  
Magnetic Field ◽  
Integrated Circuits ◽  
Electric Field ◽  
Magnetization Reversal ◽  
Logic Gate ◽  
Electronic Systems ◽  
Spintronic Devices ◽  
Nanomagnetic Logic ◽  
Field Control ◽  
Application Potential

Using the inverse piezoelectric effect and inverse magnetostrictive effect in a multiferroic heterojunction, an electric field is able to control the magnetization switching of a uniaxial nanomagnet. Compared with traditional spintronic devices based on magnetic field, multiferroic nanomagnet devices have the advantages of ultra-low consumption and high radiation resistance, showing great application potential in modern high-integrated circuits and military electronic systems. However, the difficulties of electric field control of complete magnetization reversal of the nanomagnet and nanomagnet arrays in a nanomagnetic logic gate still restrict the developments of multiferroic nanomagnet device. In this chapter, the uniaxial nanomagnets in multiferroic heterojunctions are mainly discussed. The two core problems of the electric field control of nanomagnets and nanomagnetic logic gate are well solved.

scholarly journals Unusual magnetoelectric effect in paramagnetic rare-earth langasite

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Lukas Weymann ◽  
Lorenz Bergen ◽  
Thomas Kain ◽  
Anna Pimenov ◽  
Alexey Shuvaev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Electric Field ◽  
Field Vector ◽  
Electric Polarization ◽  
Rare Earth Ions ◽  
Spontaneous Breaking ◽  
Unusual Behavior ◽  
Propagation Of Light ◽  
The Magnetic Field

Abstract Violation of time reversal and spatial inversion symmetries has profound consequences for elementary particles and cosmology. Spontaneous breaking of these symmetries at phase transitions gives rise to unconventional physical phenomena in condensed matter systems, such as ferroelectricity induced by magnetic spirals, electromagnons, non-reciprocal propagation of light and spin waves, and the linear magnetoelectric (ME) effect—the electric polarization proportional to the applied magnetic field and the magnetization induced by the electric field. Here, we report the experimental study of the holmium-doped langasite, HoxLa3−xGa5SiO14, showing a puzzling combination of linear and highly non-linear ME responses in the disordered paramagnetic state: its electric polarization grows linearly with the magnetic field but oscillates many times upon rotation of the magnetic field vector. We propose a simple phenomenological Hamiltonian describing this unusual behavior and derive it microscopically using the coupling of magnetic multipoles of the rare-earth ions to the electric field.

Trade-off in perpendicular electric field control using negatively biased emissive end-electrodes

2022 ◽  
Author(s):  
Baptiste Trotabas ◽  
Renaud Gueroult
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Thermionic Emission ◽  
Potential Drop ◽  
Plasma Potential ◽  
Magnetized Plasma ◽  
Trade Off ◽  
Sheath Edge ◽  
Field Control ◽  
Field Lines

Abstract The benefits of thermionic emission from negatively biased electrodes for perpendicular electric field control in a magnetized plasma are examined through its combined effects on the sheath and on the plasma potential variation along magnetic field lines. By increasing the radial current flowing through the plasma thermionic emission is confirmed to improve control over the plasma potential at the sheath edge compared to the case of a cold electrode. Conversely, thermionic emission is shown to be responsible for an increase of the plasma potential drop along magnetic field lines in the quasi-neutral plasma. These results suggest that there exists a trade-off between electric field longitudinal uniformity and amplitude when using negatively biased emissive electrodes to control the perpendicular electric field in a magnetized plasma.

scholarly journals Electric field control of the Verwey transition and induced magnetoelectric effect in magnetite

2012 ◽  
Vol 86 (6) ◽  
Author(s):  
Jared J. I. Wong ◽  
Adrian G. Swartz ◽  
Renjing Zheng ◽  
Wei Han ◽  
Roland K. Kawakami
Keyword(s):  
Electric Field ◽  
Magnetoelectric Effect ◽  
Verwey Transition ◽  
Field Control

scholarly journals Magnetoelectric effect in a hydrogen molecule

2014 ◽  
Vol 28 (09) ◽  
pp. 1450070 ◽  
Author(s):  
Sylvain D. Brechet ◽  
Francois A. Reuse ◽  
Klaus Maschke ◽  
Jean-Philippe Ansermet
Keyword(s):  
Magnetic Field ◽  
Symmetry Breaking ◽  
Triplet State ◽  
Magnetic Induction ◽  
Hydrogen Molecule ◽  
Symmetry Axis ◽  
Magnetoelectric Effect ◽  
Electric Polarization ◽  
Induction Field ◽  
Magnetic Induction Field

The symmetry breaking due to a magnetic field applied on a hydrogen molecule H2 generates an electric polarization. This magnetoelectric effect occurs for electrons in a triplet state provided the magnetic induction field is not aligned with the symmetry axis of the molecule.

scholarly journals Strain-mediated magnetoelectric effect for the electric-field control of magnetic states in nanomagnets

2017 ◽  
Vol 230 (4) ◽  
pp. 1247-1256 ◽  
Author(s):  
Min Yi ◽  
Bai-Xiang Xu ◽  
Ralf Müller ◽  
Dietmar Gross
Keyword(s):  
Electric Field ◽  
Magnetoelectric Effect ◽  
Field Control ◽  
Magnetic States
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