金属间稀土 - 过渡金属化合物的结构与磁性：综述

Structure and Magnetic Properties of Intermetallic Rare-Earth-Transition-Metal Compounds: A Review.

作者信息

Bessais Lotfi

机构信息

Department of Physics, University Paris Est Creteil, CNRS, ICMPE, 2 Rue Henri Dunant, F-94320 Thiais, France.

出版信息

Materials (Basel). 2021 Dec 28;15(1):201. doi: 10.3390/ma15010201.

DOI:10.3390/ma15010201

PMID:35009345

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8745917/

Abstract

This review discusses the properties of candidate compounds for semi-hard and hard magnetic applications. Their general formula is R1-sT5+2s with = rare earth, = transition metal and 0≤s≤0.5 and among them, the focus will be on the ThMn12- and Th2Zn17-type structures. Not only will the influence of the structure on the magnetic properties be shown, but also the influence of various and elements on the intrinsic magnetic properties will be discussed ( = Y, Pr, Nd, Sm, Gd, … and = Fe, Co, Si, Al, Ga, Mo, Zr, Cr, Ti, V, …). The influence of the microstructure on the extrinsic magnetic properties of these - based intermetallic nanomaterials, prepared by high energy ball milling followed by short annealing, will be also be shown. In addition, the electronic structure studied by DFT will be presented and compared to the results of experimental magnetic measurements as well as the hyperfine parameter determined by Mössbauer spectrometry.

摘要

本综述讨论了用于半硬磁和硬磁应用的候选化合物的性质。它们的通式为R1-sT5+2s，其中R = 稀土元素，T = 过渡金属，且0≤s≤0.5，其中将重点关注ThMn12型和Th2Zn17型结构。不仅将展示结构对磁性能的影响，还将讨论各种R和T元素对本征磁性能的影响（R = Y、Pr、Nd、Sm、Gd等，T = Fe、Co、Si、Al、Ga、Mo、Zr、Cr、Ti、V等）。还将展示通过高能球磨随后短时间退火制备的这些R基金属间纳米材料的微观结构对外在磁性能的影响。此外，将介绍通过密度泛函理论（DFT）研究的电子结构，并与实验磁测量结果以及由穆斯堡尔光谱法测定的超精细参数进行比较。