Video Experimental Relacionado
Updated: Apr 11, 2026
06:49
Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
Published on: April 12, 2019
8.2K
Multiferroicos. también conocido como Multiferroics. Control de dominio magnetoeléctrico en multiferroico TbMnO3
Masakazu Matsubara1, Sebastian Manz2, Masahito Mochizuki3
1Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 4, 8093 Zurich, Switzerland. Department of Physics, Tohoku University, Sendai 980-8578, Japan. m-matsubara@m.tohoku.ac.jp sebastian.manz@mat.ethz.ch.
Science (New York, N.Y.)
|June 6, 2015
Resumen
Las dinámicas de dominio en multiferroicos como TbMnO3 son cruciales para las aplicaciones. Las transiciones inducidas por el campo deterministicamente preservan patrones de dominio multiferroico, allanando el camino para la nueva nanoelectrónica.
Área de la Ciencia:
- Física de la materia condensada Física de la materia condensada
- Ciencia de los materiales Ciencia de los materiales.
- Nanotecnología La nanotecnología es la nanotecnología.
Sus antecedentes:
- La manipulación del dominio de los materiales férricos es clave para las aplicaciones.
- El acoplamiento magnetoeléctrico en dominios multiferroicos sigue siendo poco explorado.
Objetivo del estudio:
- Investigar la dinámica de dominio inducida por el campo en TbMnO3.3.
- Explorar el acoplamiento magnetoeléctrico a través de una transición de spin-flop.
Principales métodos:
- Investigación experimental de la dinámica del dominio TbMnO3.
- Las simulaciones de Landau-Lifshitz-Gilbert.
Principales resultados:
- La reorientación inducida por el campo de los parámetros de orden es determinista.
- Los patrones de dominio multiferroico se conservan a través de una transición de spin-flop de primer orden.
- Las simulaciones confirman la naturaleza intrínseca de este comportamiento.
Conclusiones:
- Las correlaciones magnetoeléctricas en los ferroeléctricos accionados por espín son robustas.
- Potencial para los dispositivos nanoelectrónicos basados en paredes de dominio.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:31Ferromagnetism
3.6K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.6K
01:30Paramagnetism
3.3K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
3.3K
01:23Magnetic Field due to Moving Charges
12.5K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
12.5K
01:28Magnetostatic Boundary Conditions
1.9K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.9K
03:02Colors and Magnetism
14.7K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.7K
01:26Diamagnetism
3.5K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
3.5K