quantum tunneling,magnetic coupling

关键词:lanthanide,single-molecule magnets,relaxation

dynamics,quantum tunneling,magnetic coupling
摘要:In the area of molecular magnetism,single molecule magnets

(SMMs) containing lanthanide elements are of immense scientific

and technological interest because of Block neodymium magnet their large energy barriers

and high measured hysteresis temperature.Although there has been

significant progress in the synthesis and characterization of

lanthanide-based SMMs,there are still challenges,for instance,how

single-ion anisotropy of lanthanide elements can be exploited,and

how zero-field tunneling of http://www.chinamagnets.biz/Neodymium/Block-neodymium-magnet.php magnetization can be suppressed.This

article is devoted to the progress in various methodologies for

modulating magnetic relaxation,especially in terms of crystal

field and magnetic interactions.The crystal field plays a

dominant role in creating single-molecule magnets with largely

anisotropic f-elements,while the strong coupling between magnetic

centers is able to suppress quantum tunneling of magnetization

efficiently.