Balamurugan B, Das B, Zhang W Y, Skomski R, Sellmyer D J
J Phys Condens Matter. 2014 Feb 12;26(6):064204. doi: 10.1088/0953-8984/26/6/064204.
The structural and magnetic properties of nanostructured Co-rich transition-metal alloys, Co(100-x)TMx (TM = Hf, Zr and 10 ≤ x ≤ 18), were investigated. The alloys were prepared under non-equilibrium conditions using cluster-deposition and/or melt-spinning methods. The high-anisotropy HfCo7 and Zr2Co11 structures were formed for a rather broad composition region as compared to the equilibrium bulk phase diagrams, and exhibit high Curie temperatures of above 750 K. The composition, crystal structure, particle size, and easy-axis distribution were precisely controlled to achieve a substantial coercivity and magnetization in the nanostructured alloys. This translates into high energy products in the range of about 4.3-12.6 MGOe, which are comparable to those of alnico.
研究了富钴纳米结构过渡金属合金Co(100-x)TMx（TM = Hf、Zr，10≤x≤18）的结构和磁性。采用团簇沉积和/或熔体纺丝法在非平衡条件下制备了这些合金。与平衡体相图相比，在相当宽的成分范围内形成了高各向异性的HfCo7和Zr2Co11结构，并表现出高于750 K的居里温度。精确控制成分、晶体结构、粒径和易轴分布，以在纳米结构合金中实现可观的矫顽力和磁化强度。这转化为约4.3-12.6 MGOe范围内的高能量积，与铝镍钴合金相当。
