Abstract
Magnetization and Mössbauer measurements reveal that hexagonal Laves phase compounds Sc 1- x Ti x Fe 1.95 , with 0.3< x <0.7 have two ferromagnetic states with different degrees of localization. The magnetic transition from one ferromagnetic state to the other more delocalized state takes place at ∼70 K with increasing temperature in Sc 0.35 Ti 0.65 Fe 1.95 with T C =360 K. At 500 K the magnetic state changes again to the more localized state with a smaller effective paramagnetic moment. The unit cell volume discontinuously decreases by ∼1.1 % at ∼70 K and its temperature derivative becomes small at ∼500 K with increasing temperature. The results were analyzed with universal expressions derived from the spin fluctuation theory by Moriya for the magnetic susceptibility and the average of the squared local amplitude of spin fluctuation. The temperature variation of the mean square local amplitude of spin fluctuation explains consistently the temperature dependence of spontaneous volume magnetostriction and the susceptibility of Sc 0.35 Ti 0.65 Fe 1.95 up to ∼700 K.
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.
