Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.29: Poster
Donnerstag, 12. März 2026, 15:00–17:00, P4
Broadly tunable compensation in ferrimagnetic MnFeVAl Heusler alloy — •Esita Pandey1, Shogo Yamashita1, Edouard Lesne1, Gerhard Fecher1, Claudia Felser1, and Atsufumi Hirohata1,2 — 1Max-Planck-Institute for Chemical Physics of Solids, Dresden, Germany — 2Tohoku University, Sendai, Japan
Zero-moment spintronic systems are highly desirable, as they minimize stray fields while maintaining stability against external magnetic perturbations. Unlike antiferromagnets, compensated ferrimagnets offer an ideal solution, combining a net-zero magnetic moment with spin-polarized conduction [1-3]. In this study, we demonstrate the realization of a near-zero-moment state in Mn1.5V0.5FeAl Heusler alloy thin films with a wide tunable compensation range. Films of varying thickness were fabricated on thermally oxidized Si substrates with a W buffer layer using simultaneous triple-target sputtering in an ultra-high-vacuum system. Structural analysis via X-ray diffraction shows that the W underlayer is stabilized in the body-centered cubic (bcc) α-phase with (110) orientation, while the Heusler films exhibit pronounced [110] texture and a lattice parameter close to bulk values. Magnetometry measurements reveal that the samples are magnetically isotropic and exhibit an exceptionally low saturation magnetization at RT. These results position MnFeVAl films as promising candidates for thermally stable, stray-field-free spintronic devices with robust spin-polarized transport. Reference: [1] V. Baltz et al., Rev. Mod. Phys. Vol. 90, No. 1 (2018); [2] A. Hirohata, Magnetochemistry 8, 37 (2022); [3] R. Stinshoff et al., Phys. Rev. B 95, 060410(R) (2017).
Keywords: Compensated ferrimagnetism; Heusler alloys; Thin films; Magnetometry