Epitaxial growth and magnetic properties of Sr2CrReO6 thin films
S. Gepraegs, F.D. Czeschka, M. Opel, S.T.B. Goennenwein, W. Yu, W., Mader, and R. Gross
TL;DR
This paper reports the successful epitaxial growth of Sr2CrReO6 thin films with high magnetic properties, demonstrating potential for spintronics applications through detailed structural and magnetic characterization.
Contribution
It presents a novel method for fabricating phase-pure Sr2CrReO6 epitaxial films with optimized magnetic and structural properties.
Findings
High saturation magnetization of 0.8 μB per formula unit
High coercivity of 1.1 T
Films are c-axis oriented and coherently strained
Abstract
The double perovskite Sr2CrReO6 is an interesting material for spintronics, showing ferrimagnetism up to 635 K with a predicted high spin polarization of about 86%. We fabricated Sr2CrReO6 epitaxial films by pulsed laser deposition on (001)-oriented SrTiO3 substrates. Phase-pure films with optimum crystallographic and magnetic properties were obtained by growing at a substrate temperature of 700 degree C in pure O2 of 6.6x10-4 mbar. The films are c-axis oriented, coherently strained, and show less than 20% anti-site defects. The magnetization curves reveal high saturation magnetization of 0.8 muB per formula unit and high coercivity of 1.1 T, as well as a strong magnetic anisotropy.
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