Magnetic and structural properties of Co${}_2$MnSi based Heusler compound

Abstract

The influence of antisite disorder occupancies on the magnetic properties of the half-metallic Co${}_2$MnSi compound was studied by experimental techniques and first-principles calculations. The neutron diffraction studies show almost identical amount of Mn and Co disorders of 6.5\% and 7.6\%, which was found to be in good agreement with density functional theory (DFT) calculations of the stable Co${}_2$MnSi system with the corresponding disorders. DFT studies reveal that antiferromagnetic interactions introduced by Mn disorder lead to a reduction of the net magnetic moment. The results are discussed in conjunction with neutron diffraction and magnetization measurements. Transport property measurement under magnetic field up to 9 Tesla revealed a positive magnetoresistance for bulk Co${}_2$MnSi that persists up to room temperature. A Curie temperature of $\sim$1014 K was determined for the compound by high temperature electrical resistivity and dilatometry measurements.

References in corpus (13)

• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Half-metallic ferromagnets: From band structure to many-body effects
• Calculated electronic and magnetic properties of the half-metallic, transition metal based Heusler compounds
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• Topological surface Fermi arcs in the magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$
• Magnetoresistance From Quantum Interference Effects in Ferromagnets
• Spin injection from the Heusler alloy Co_2MnGe into Al_0.1Ga_0.9As/GaAs heterostructures
• Half-Metallic Ferromagnetism in the Heusler Compound Co${}_2$FeSi revealed by Resistivity, Magnetoresistance, and Anomalous Hall Effect measurements
• Non-quasiparticle states in Co${}_2$MnSi evidenced through magnetic tunnel junction spectroscopy measurements
• Design of magnetic materials: Co${}_2$Cr${}_{1-x}$Fe${}_x$Al
• Structural, magnetic and transport properties of thin films of the Heusler alloy Co2MnSi
• Current-perpendicular-to-plane giant magnetoresistance of a spin valve using Co2MnSi Heusler alloy electrodes
• Rational Design of Half-Metallic Heterostructures

Cited by in corpus (1)

• Effect of Point Defects and Lattice Distortions on the Structural, Electronic, and Magnetic properties of Co${}_2$MnAl Heusler alloy