Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 260, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.202200518
Keywords
alternate monoatomic layer deposition; artificial fabrication; disordered alloy NiMn films; exchange bias
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Single-crystalline antiferromagnetic artificially layered [Ni/Mn] films of different thicknesses, covered by ferromagnetic Co layers, show decreased perpendicular interatomic lattice distance compared to disordered Ni x Mn 100-x alloy films. The artificially layered [Ni/Mn] films exhibit higher coercivity and exchange bias, which is attributed to a stronger interlayer exchange coupling caused by the ordered buckling in the samples.
Single-crystalline antiferromagnetic artificially layered [Ni/Mn] films of different thicknesses, covered by ferromagnetic Co layers, are deposited on Cu 3 Au(001) . Their structural and magnetic properties are characterized by low-energy electron diffraction (LEED) and magneto-optical Kerr effect, respectively, and compared with disordered Ni x Mn 100-x alloy films with the same Ni/Mn ratio and the same film thickness. LEED intensity-versus-energy curves show that the perpendicular interatomic lattice distance is decreased in the artificially layered [Ni/Mn] samples in comparison to the disordered Ni x Mn 100-x alloy films. At the same time, the artificially layered [Ni/Mn] films exhibit higher coercivity and exchange bias of the adjacent Co layer compared to those of Ni x Mn 100-x /Co . This is discussed as a consequence of the different interatomic lattice distance, presumably caused by an ordered buckling in the artificially layered [Ni/Mn] samples, leading to a stronger interlayer exchange coupling.
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