Abstract
Abstract We have studied the magnetic, magnetocaloric, and magnetostriction properties of LaFe 11.4 Si 1.6 and La(Fe 0.99 Z 0.01 ) 11.4 Si 1.6 (Z=Ni, Cu, Cr, V) compounds using magnetization and strain gauge techniques. It was found that substitution of 1% of the Fe by Z-elements results in an increase in the Curie temperature ( T C ), and affects the magnetostriction and magnetocaloric properties of the parent compound, LaFe 11.4 Si 1.6 . A maximum shift in T C of about 11 K, and significantly smaller hysteresis losses in the vicinity of T C compared with those of the base compound, were found for Z=V. The maximum magnetovolume coupling constant was estimated to be n dd ≈2.7×10 −3 ( μ B /Fe atom) −2 for the parent compound. The changes in the volume magnetostriction, the magnetovolume coupling constant, and the magnetocaloric properties are strongly correlated with composition. The relative effects of the variation in cell parameters and electron concentration on the magnetostriction, T C , and the magnetocaloric properties are discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.