Resolving magnetic frustration in a pyrochlore lattice

Abstract

CeFe${}_2$ is a geometrically frustrated ferromagnet that lies close to an instability at which a subtle change in the lattice symmetry couples to a transition to antiferromagnetism. We use x-ray diffraction, diamond-anvil-cell techniques, and numerical simulation to identify the ground states and to quantitatively illustrate effects of competing magnetic energy scales and geometrical frustration on the magnetic phase diagram. Comparison of phase transitions under both chemical substitution and applied pressure suggests a general solution to the physics of pyrochlore rare earth inter-metallic magnets.

5 pages, 4 figures

References in corpus (5)

• Magnetic Pyrochlore Oxides
• Magnetic ordering in Gd2Sn2O7: the archetypal Heisenberg pyrochlore antiferromagnet
• Hierarchical mean-field approach to the $J_1$-$J_2$ Heisenberg model on a square lattice
• Pressure-Tuned Spin and Charge Ordering in an Itinerant Antiferromagnet
• Macroscopic signature of protected spins in a dense frustrated magnet

Cited by in corpus (7)

• Magnetic Pitch as a Tuning Fork for Superconductivity
• High-resolution neutron depolarization microscopy of the ferromagnetic transitions in Ni${}_3$Al and HgCr${}_2$Se${}_4$ under pressure
• Topology and geometry of spin origami
• Pressure induced collapse of magnetic order in jarosite
• Magnetic instability and $f-d$ hybridization in CeFe${}_2$ on substituting Cr, Ag and Au for Fe
• Formation of the S=1 paramagnetic centers in the bond-diluted spin-gap magnet
• Emergence of ferromagnetic state due to structural disorder in pseudo-binary Ce(Fe0.9Co0.1)2 compound