Abstract
The commensurate antiferromagnetic order of ${\mathrm{Cr}}_{94}{\mathrm{Fe}}_{6}$ alloy layers in epitaxial ${\mathrm{F}\mathrm{e}/\mathrm{C}\mathrm{r}}_{94}{\mathrm{Fe}}_{6}(001)$ superlattices was investigated by transport and magnetization techniques. N\'eel temperature ${T}_{N}$ values are strongly thickness dependent, with ${T}_{N}$ suppressed for ${\mathrm{Cr}}_{94}{\mathrm{Fe}}_{6}$ thicknesses 36 \AA{}. Transport results indicate a broadening of the transition with an onset temperature ${T}_{0}{T}_{N}$ by \ensuremath{\approx}150 K for all samples. The biquadratic interlayer coupling of the Fe layers is enhanced for ${T}_{N}T{T}_{0}$ and suppressed below ${T}_{N}.$ ${T}_{0}$ and ${T}_{N}$ are identified with the onset on cooling of inhomogeneous and homogeneous order, respectively, within the spacer layers. The regime of inhomogeneous ordering of the spacer is believed to promote biquadratic coupling because of the dominance of interfacial exchange energies.
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.
