Martensitic Transformation and Magnetic Anisotropy in Ni-Mn-Ga/NaCl(001) Thin Films Probed by Ferromagnetic Resonance
By the ferromagnetic resonance and magnetometry measurements in a broad temperature range, it is found that the 220-fiber textured Ni51.4Mn28.3Ga20.3 (at. %) film of 100 nm thickness deposited onto NaCl(001) exhibits in the martensitic state an easy-plane magnetic anisotropy. This is in a drastic difference with the identical film of the same texture deposited onto Si(001) wafer showing out-of-plane oblique type of anisotropy [Golub et al., J. Appl. Phys. 105, 07A942 (2009)]. The results are discussed in terms of the different martensitic variant selections and stress-induced magnetic anisotropy contributions having opposite signs.
Aseguinolaza, I. R.; Golub, Vladimir; Barandiárn, J. M.; Ohtsuka, Makoto; Müllner, Peter; Salyuk, O. Y.; and Chernenko, V. A.. (2013). "Martensitic Transformation and Magnetic Anisotropy in Ni-Mn-Ga/NaCl(001) Thin Films Probed by Ferromagnetic Resonance". Applied Physics Letters, 102(18), 182401. http://dx.doi.org/10.1063/1.4804376