Magnetic order in the chemically-substituted frustrated antiferromagnet CsCrF${}_4$

Abstract

The effect of chemical substitution on the ground state of the geometrically frustrated antiferromagnet CsCrF${}_4$ has been investigated through a neutron powder diffraction experiment. Magnetic Fe-substituted CsCr${}_{0.94}$Fe${}_{0.06}$F${}_4$ and nonmagnetic Al-substituted CsCr${}_{0.98}$Al${}_{0.02}$F${}_4$ samples are measured, and magnetic Bragg peaks are clearly observed in both samples. Magnetic structure analysis revealed a 120${}^{\circ }$ structure having a magnetic propagation vector ${\mathbf{k}}_{\mathrm{mag}}=(0,0,1/2)$ in CsCr${}_{0.94}$Fe${}_{0.06}$F${}_4$. For CsCr${}_{0.98}$Al${}_{0.02}$F${}_4$, a quasi-120${}^{\circ }$ structure having ${\mathbf{k}}_{\mathrm{mag}}=(1/2,0,1/2)$ is formed. It is notable that the identified magnetic structure in CsCr${}_{0.94}$Fe${}_{0.06}$F${}_4$ belongs to a different phase of ground states from those in CsCr${}_{0.98}$Al${}_{0.02}$F${}_4$ and the parent CsCrF${}_4$. These results suggest that the Fe-substitution strongly influences the ground state of CsCrF${}_4$.

References in corpus (15)

• Quantum Spin Liquids
• Dipolar Interactions and Origin of Spin Ice in Ising Pyrochlore Magnets
• Symmetry breaking due to Dzyaloshinsky-Moriya interactions in the kagome lattice
• Ordering in the pyrochlore antiferromagnet due to Dzyaloshinsky-Moriya interactions
• Quantum spin-liquid behavior in the spin-1/2 random Heisenberg antiferromagnet on the triangular lattice
• Spin Freezing in Geometrically Frustrated Antiferromagnets with Weak Disorder
• Spin glass transition in geometrically frustrated antiferromagnets with weak disorder
• Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice
• Triangular antiferromagnet with nonmagnetic impurities
• Classical dipoles on the kagome lattice
• Interplay of anisotropy and frustration: triple transitions in a triangular-lattice antiferromagnet
• Kagome-Triangular Lattice Antiferromagnet NaBa2Mn3F11
• Order Induced by Dilution in Pyrochlore XY Antiferromagnets
• Magnetic phase diagram of the coupled triangular spin tubes for CsCrF4
• Effects of site dilution on the magnetic properties of geometrically frustrated antiferromagnets

Cited by in corpus (1)

• Inelastic Neutron Scattering in Weakly Coupled Triangular Spin Tubes CsCrF${}_4$