Mössbauer and magnetic-susceptibility studies on MmNi4.15Fe0.85 and its hydride
- 1 May 1990
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 67 (9) , 5873-5875
- https://doi.org/10.1063/1.345999
Abstract
Results are reported on MmNi5−xFex (x=0.85) (Mm=mischmetal) and its hydride from magnetic susceptibility (χ), Mössbauer, and scanning‐electron‐microscopy studies. The magnitude of χ, the shape of the χ‐vs‐T curve (50–300 K), and the magnitude of Tc (≂200 K) are all close to the values reported for LaNi4Fe. The magnetic properties are significantly changed by the hydriding process. χ (at 100 Oe) above Tc is increased by 100%, whereas at 77 K, χ is lowered by 25%, although Tc is unaffected. The Mössbauer spectra above Tc yield a paramagnetic doublet (isomer shift −0.13±0.01 mm s−1); however, as the temperature decreases, the doublet disappears at 125 K. Hydriding causes only a very small change in the isomer shift.This publication has 10 references indexed in Scilit:
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