Geometrical Magnetic Frustration in Rare Earth Chalcogenide Spinels

Abstract

We have characterized the magnetic and structural properties of the CdLn2Se4 (Ln = Dy, Ho), and CdLn2S4 (Ln = Ho, Er, Tm, Yb) spinels. We observe all compounds to be normal spinels, possessing a geometrically frustrated sublattice of lanthanide atoms with no observable structural disorder. Fits to the high temperature magnetic susceptibilities indicate these materials to have effective antiferromagnetic interactions, with Curie-Weiss temperatures theta ~ -10 K, except CdYb2S4 for which theta ~ -40 K. The absence of magnetic long range order or glassiness above T = 1.8 K strongly suggests that these materials are a new venue in which to study the effects of strong geometrical frustration, potentially as rich in new physical phenomena as that of the pyrochlore oxides.

17 pages, 5 figures, submitted to Phys Rev B; added acknowledgements

References in corpus (10)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Spin Correlations in Ho${}_2$Ti${}_2$O${}_7$: a Dipolar Spin Ice System
• Er2Ti2O7: Evidence of Order by Disorder in a Frustrated Antiferromagnet
• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Magnetic anisotropy of the spin ice compound Dy2Ti2O7
• First Order Transition in the Spin Dynamics of Geometrically Frustrated Yb2Ti2O7
• Multiple Field-Induced Phase Transitions in a Geometrically-Frustrated Dipolar Magnet - Gd2Ti2O7
• Quantum-Classical Reentrant Relaxation Crossover in Dy2Ti2O7 Spin-Ice
• Static Correlation and Dynamical Properties of Tb3+-moments in Tb2Ti2O7 -Neutron Scattering Study-
• Quantum and thermal spin relaxation in diluted spin ice: Dy(2-x)MxTi2O7 (M = Lu, Y)

Cited by in corpus (18)

• Quantum Spin Ice: A Search for Gapless Quantum Spin Liquids in Pyrochlore Magnets
• Frustrated quantum rare-earth pyrochlores
• Frustration and anisotropic exchange in ytterbium magnets with edge-shared octahedra
• Experimental Insights into Ground State Selection of Quantum XY Pyrochlores
• Pseudo-Goldstone gaps and order-by-quantum-disorder in frustrated magnets
• Ground State Phase Diagram of Generic XY Pyrochlore Magnets with Quantum Fluctuations
• Signatures of spin-glass behavior in the induced magnetic moment system PrRuSi3
• Magnon interactions in the frustrated pyrochlore ferromagnet Yb${}_2$Ti${}_2$O${}_7$
• Frustrated Magnetism in Fluoride and Chalcogenide Pyrochlore Lattice Materials
• Evidence for unidimensional low-energy excitations as the origin of persistent spin dynamics in geometrically frustrated magnets
• Magnetic frustration in the sawtooth lattice of ZnLn2S4 (Ln = Er, Tm, Yb) olivines
• Fluctuation-Driven Selection at Criticality in a Frustrated Magnetic System: the Case of Multiple-k Partial Order on the Pyrochlore Lattice
• Melting of Spin Ice state through structural disorder in Dy2Zr2O7
• Dipolar spin ice states with fast monopole hopping rate in CdEr${}_2$X${}_4$ (X = Se, S)
• Long-range dynamical magnetic order and spin tunneling in the cooperative paramagnetic states of the pyrochlore analogous spinel antiferromagnets CdYb2X4 (X = S, Se)
• Frustrated magnetism in the Heisenberg pyrochlore antiferromagnets $A$Yb${}_2$$X$${}_4$ ($A$ = Cd, Mg, $X$ = S, Se)
• A neutron scattering measurement of crystalline-electric fields in magnesium rare-earth selenide spinels
• Multi-phase competition in quantum $XY$ pyrochlore antiferromagnet CdYb${}_2$Se${}_4$: zero and applied magnetic field study