Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1802862 | Journal of Magnetism and Magnetic Materials | 2006 | 6 Pages |
Abstract
The existence of a magnetic moment at the nickel sites in ferromagnetic shape-memory alloys (FSMA) has long been speculated. Using a state-of-the-art X-ray magnetic circular dichroism (XMCD) technique we found that Ni 3d moments indeed exist in Ni–Mn–Ga-based FSMA. Band-structure calculations were used to simulate the XMCD spectra and estimate this moment to be ∼0.33μB. Such a Ni moment plays a critical role in the dispersions of non-collinear spin structures, which determine the finite-temperature magnetic properties.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Zahirul Islam, D. Haskel, J.C. Lang, G. Srajer, Y. Lee, B.N. Harmon, A.I. Goldman, D.L. Schlagel, T.A. Lograsso,