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Son of former Mexican president says US revoked his visa
Andres Manuel Lopez Beltran, a son of former Mexican President Andres Manuel Lopez Obrador, accuses Secretary of State Marco Rubio and Deputy Secretary Christopher Landau of ordering what he called a politically motivated decision.
New study reveals how maze-like magnetic patterns form and evolve in materials
Maze magnetic domains in soft magnetic materials strongly influence energy loss in electric motors, particularly at high temperatures. However, existing models struggle to explain their complex, temperature-dependent behavior. To address this gap, researchers developed an entropy-extended Ginzburg-Landau model combined with data-driven analysis to study these structures. The approach reveals how entropy and energy interactions drive magnetization reversal and increasing domain complexity, providing new insights into magnetic energy-loss mechanisms.