New magnetic materials to meet the material in different service environment applications. Phase MAX is A kind of nano-layered Transition Metal compound with hexagonal lattice structure, the molecular formula is Mn+1AXn, (where M is generally A pre-transition metal, A is mainly A 13-15 main group element, X is carbon or/and nitrogen, and N takes the value of 1-3), 1.
From the bonding characteristics of the MAX phase lattice, the electron cloud overlap between M and X atoms determines the strong ionic bond and covalent bond, while the electron cloud overlap between M and A atoms is weak, which is helpful to reflect the physical and chemical properties of A element. Therefore, if magnetic elements are introduced into the A position of MAX phase, it is expected to be used as functional materials in spintronic devices with unique nano-layered structure, high stability and adjustable anisotropy. However, previous studies have generally believed that post-transition metal elements such as Fe, Co, Ni and Mn with 3D electrons should exist in the M atomic lattice site of MAX phase materials. It is considered to be A great challenge to synthesize magnetic elements to occupy the A site of two-dimensional monatomic layer in MAX phase.
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