abstract

• We study a two-dimensional system of magnetic particles under an alternating magnetic field. The particles are settled on the surface of a negative lens where they tend to sediment toward the center due to gravity. The effective temperature is controlled by the intensity of the applied magnetic field. The system is cooled down from a gaslike state to a solidlike state at different rates. We observe that for some slow cooling rates the final configuration of system is a hexagonal compact arrange, while for the faster cooling rates the final configurations are glasslike states. We followed the time evolution of the system, which allows us to determine in detail changes in quantities such as the interparticle distance. We determine the glass transition temperature for different cooling rates, finding that such temperature increases as the cooling rate decreases, in contrast with some other glass-forming liquids. © 2020 American Physical Society.

authors

• Arauz Lara Bernardo José Luis
• Donado F.
• Escobar A.
• Moctezuma Martiñón Rosario Esperanza
• Tapia-Ignacio C.

publication date

• 2020-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: 256176, 440, 80629  Grant

published in

• Physical Review E  Journal

keywords

• Crystals; Glass; Glass transition; Liquids; Magnetic fields; Temperature; Alternating magnetic field; Applied magnetic fields; Effective temperature; Glass-forming liquid; Interparticle distances; Magnetic particle; Temperature increase; Two-dimensional systems; Cooling

Digital Object Identifier (DOI)

• 10.1103/PhysRevE.101.052907

PubMed ID

• 32575294

start page

end page

volume

• 101

issue

• 5