%0 Journal Article
%A Manea, Nafea
%A Welter, Edmund
%A Priolkar, Kaustubh
%T Factors influencing the martensitic transformation in Ni–Mn–Z (Z = Ga, Sn) Heusler alloys
%J Journal of physics / D
%V 57
%N 14
%@ 0022-3727
%C Bristol
%I IOP Publ.
%M PUBDB-2024-00641
%P 145304
%D 2024
%Z Waiting for fulltext 
%X The martensitic transition temperature of the Ni–Mn–Z (Z = Ga, In, Sn or Sb) generally scales with the average valence electron per atom (e/a) ratio. The (e/a) ratio can be increased either by increasing Ni content in lieu of Mn or Z (Ni-rich) or by substituting Mn for Z (Mn-rich). While the Mn-rich alloys display the expected scaling behaviour of the martensitic transition temperature, the Ni-rich alloys, with the exception of Z = Ga alloys, do not exhibit any dependency on the (e/a) ratio. By carefully studying and comparing the structure, local structure and the physical properties of the Ni-rich and Mn-rich Ni–Mn–Ga and Ni–Mn–Sn alloys, the cause of the difference in behaviour is identified. The off-stoichiometry brought about by increasing the Ni or Mn content, results in the formation of a new local structural environment in addition to the Heusler-like environment. If either of the two local structural environments is martensitic, then the resulting Ni-rich or Mn-rich alloy also exhibits martensitic transformation.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001144263800001
%R 10.1088/1361-6463/ad19b5
%U https://bib-pubdb1.desy.de/record/602521