Low-Dimensional Self-Assembly Of Magnetic Superatomic Clusters And Exploration Of Students' Physical Thinking

At present,the teaching concept of basic education in China has changed from traditional teacher teaching,student learning,and knowledge transfer to the process of paying attention to how students learn and how to focus on ability development.As a basic subject of natural science,physics plays an important role in the study of other science and engineering.Therefore,it is crucial to cultivate students'physical thinking ability.The main research contents of this paper are as follows:1.In order to study how to cultivate students'physical thinking ability,this paper first demonstrates the process of constructing two-dimensional?2D?ferromagnetic materials by using magnetic superatom as building blocks by self-assembly and surface-support assembly methods,and then taking magnetic superatomic analogy as a student with individual characteristics.The new 2D ferromagnetic materials can be compared to a dynamic collective.Inspired by the effect of magnetic superatoms from monomer magnetism to the magnetic properties of assembled materials,we realize that the coordination effect of class collectives can be utilized in the teaching process.And the target effect,to play the characteristics of students'individuality,to cultivate students'physical thinking ability.2.The spin-polarization density functional theory?DFT?method was used to study the geometry,electronic structure and magnetic properties of the low-dimensional self-assembled structure of MnSr₉ superatoms.Then the electronic structure and magnetic properties of VLi₈ superatoms on the surface of graphene was further studied.The following conclusions have been drawn:?1?The stability,magnetic and electronic properties of three different 2D self-assembledstructures?squares,trianglesandhexagonshoneycomb?were systematically studied by DFT,first-principles molecular dynamics and Monte Carlo simulation.The results show that the three 2D cluster sheets assembled are thermodynamically stable ferromagnetic materials at room temperature,where the hexagonal honeycomb structure has a Curie temperature close to room temperature?Tc²73K?.?2?A magnetically enhanced 2D ferromagnetic film was constructed on the surface of graphene by VLi₈ superatomic adsorption.Four typical contacts with graphene surfaceconfigurations were considered.The result indicates that regardless of the type of adsorption,the adsorption of VLi₈ superatoms on the surface of graphene maintains its structural stability.In addition a freestanding VLi₈ superatom have a 5?_B magnetic moment,while the VLi₈ superatom supported on graphene is shown to have a magnetic moment of approximate 6?_B/cell.The further calculation also shows that VLi₈ clusters on graphene exhibit a robust ferromagnetic coupling.