Mossbauer studies of R(FeCo)₂Laves phases

Mössbauer effect studies of Dy(Fe0.4Co0.6−Ni )2 intermetallics

“…As well as the above mentioned lattice parameter a(x), the isomer shift IS(x) also decreases with x and experimental points are described by a numerical equation: IS(x) = (−0.028x + 0.046) mm/s (line 1). It has been previously found for the rare earth-transition metal Laves phases that a reduction of the lattice parameter causes a decrease in the isomer shift at 57 Fe nuclei [27,28]. A similar reduction of both the lattice parameter and the isomer shift is observed in the studied Dy(Fe 0.4 Co 0.6−x Ni x ) 2 series.…”

ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF THE Y (Fe1-xCox)2 ALLOYS

“…The general trend of the measured total magnetic moment, with a maximum at approximately a = 0.30, is aIso reproduced. From table I it becomes clear that 9.8 9.9 10.9 11.9 -n3d I =-atom 6.64 6.87 7.13 7.37 7.74 [5]) or filled tilted squares (Steiner et al [6]).…”

Moment variation in Er(Co1−xFex)2 Laves phase: Magnetic measurements and Mössbauer spectroscopy study

“…The calculation results are in good agreement with the experiment results. 17,18 It is therefore conceivable that the same mechanism as in Y͑Fe x Co 1−x ͒ 2 Laves phase is also responsible for the concentration dependence of the 3d-moment in Er͑Co 1−x Fe x ͒ 2 system. A quantitative explanation of the observed Slater-Pauling behavior will have to await detailed calculations for the Er͑Co 1−x Fe x ͒ 2 Laves phases.…”