Abstract
Thermodynamic, structural and magnetic properties of LaNi 5 − x Fe x hydrides were investigated. The hydrogen absorption and desorption isotherms were determined in the temperature range 25–60 °C using an incremental volumetric method. The substitution of iron for nickel induced a decrease of the plateau pressure and of the hydrogen content. Neutron diffraction measurements showed that the deuteride LaNi 4-FeD 5.1 has the same structure as the intermetallic compound, the deuterium atoms being distributed over three interstitial sites (6m, 12n and 4h). Hydrogen absorption in LaNi 5 − x Fe x led to a reduction in the magnetization. The Mössbauer spectra of the hydride LaNi 4FeH 5.3 above the magnetic ordering temperature consisted of a superposition of two quadrupole doublets. The isomer shift was higher than that of the corresponding intermetallic compound.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
