Epitaxy of thin films of the Heusler compound Co2Cr0.6Fe0.4Al
A. Conca, M. Jourdan, C. Herbort, and H. Adrian
TL;DR
This paper reports on the epitaxial growth of highly ordered Co2Cr0.6Fe0.4Al thin films using magnetron sputtering, demonstrating improved structural order and magnetic properties with an Fe buffer layer on MgO substrates.
Contribution
It introduces a method for growing highly ordered Heusler compound thin films with enhanced magnetic properties using Fe buffer layers.
Findings
Successful epitaxial growth of Co2Cr0.6Fe0.4Al on MgO with Fe buffer.
High magnetic moment indicating low disorder.
Use of buffer layer improves film quality.
Abstract
Epitaxial thin films of the highly spin polarized Heusler compound Co2Cr0.6Fe0.4Al are deposited by dc magnetron sputtering. It is shown by XRD and TEM investigations how the use of an Fe buffer layer on MgO(100) substrates supports the growth of highly ordered Co2Cr0.6Fe0.4Al at low deposition temperatures. The as grown samples show a relatively large ordered magnetic moment of mu = 3.0mu_B/f.u. providing evidence for a low level of disorder.
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