Abstract
In order to clarify the origin of the absence of a spin glass state from hydrogen-induced amorphous (HIA) YFe2(H) alloys, the magnetic properties of HIA YFe2Hx (x=0.9, 1.9, and 3.6) alloys were investigated by Fe57 Mössbauer spectroscopy, ac susceptometry, and thermogravimetric magnetic analysis. Both the mean hyperfine field (〈Bhf〉) at 0 K and the magnetic transition temperature in the HIA YFe2Hx alloys show a tendency to decrease with a decrease in x. The exchange integral (J) estimated from the temperature dependence of 〈Bhf〉 is also reduced dramatically with a decrease in x. The absence of a spin glass state in HIA YFe2(H) is understood well by the enhancement of J through the volume expansion induced by the absorption of hydrogen.
Sign-in/Register to access full text options 
Free) 
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 call
