Growth of EuO single crystals at reduced temperatures

Abstract

Single crystals of (Eu${}_{1-x}$Ba${}_x$)O have been grown in a molten barium-magnesium metal flux at temperatures up to 1000°C, producing single crystals of (Eu${}_{1-x}$Ba${}_x$)O with barium doping levels ranging from $x=0.03$ to $x=0.25$. Magnetic measurements show that the ferromagnetic Curie temperature T${}_C$ correlates with the Ba doping levels, and a modified Heisenberg model was used to describe the stoichiometry dependence of T${}_C$. Extrapolation of the results indicates that a sample with Ba concentration of $x=0.72$ should have a T${}_C$ of 0 K, potentially producing a quantum phase transition in this material.

arXiv comment5 figures

References in corpus (11)

• Integration of the Ferromagnetic Insulator EuO onto Graphene
• Topological States in Ferromagnetic CdO/EuO Superlattices and Quantum Wells
• Exchange interactions in europium monochalcogenide magnetic semiconductors and their dependence on hydrostatic strain
• Chern insulator at a magnetic rocksalt interface
• Epitaxial EuO Thin Films on GaAs
• Nonlocal transistor based on pure crossed Andreev reflection in a EuO-graphene/superconductor hybrid structure
• Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films
• Electronic structure and magnetic properties of Gd-doped and Eu-rich EuO
• Effect of Gd doping and O deficiency on the Curie temperature of EuO
• The elevated Curie temperature and half-metallicity in the ferromagnetic semiconductor La${}_x$Eu${}_{1-x}$O
• Theory of Curie temperature enhancement in electron-doped EuO