Effect of site disorder on the magnetic properties of weak itinerant ferromagnet Ni75Al25

Pramana

S N Kaul1¹  Anita Semwal¹ 

[1] School of Physics, University of Hyderabad, Hyderabad 500 046, India$$

关键词: Itinerant ferromagnet;    Ni3 Al;    site disorder;    spin wave stiffness;    magnetic irreversibility;    spin fluctuations.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Detailed study of Ni75Al25 samples with varying degree of site disorder reveals that site disorder promotes magnetic excitations such as spin waves and local spin-density fluctuations and thereby reduces both spin-wave stiffness and Curie temperature. Irreversibility lines in the 𝑇-𝐻 phase diagram of the weak itinerant ferromagnet Ni75Al25 have been determined for the first time and the effect of site disorder on them has been ascertained.

【 授权许可】

Unknown