Phase Relations in the Li2O-V2O3-V2O5 System at 700 C: Correlations with Magnetic Defect Concentration in Heavy Fermion LiV2O4

Abstract

The phase relations in the Li2O-V2O3-V2O5 ternary system at 700 C for compositions in equilibrium with LiV2O4 are reported. This study clarified the synthesis conditions under which low and high magnetic defect concentrations can be obtained within the spinel structure of LiV2O4. We confirmed that the LiV2O4 phase can be obtained containing low (0.006 mol%) to high (0.83 mol%) magnetic defect concentrations n{defect} and with consistently high magnetic defect spin S values between 3 and 6.5. The high n{defect} values were obtained in the LiV2O4 phase in equilibrium with V2O3, Li3VO4, or LiVO2 and the low values in the LiV2O4 phase in equilibrium with V3O5. A model is suggested to explain this correlation.

6 pages, 7 figures; Phys. Rev. B (accepted)

References in corpus (4)

• Synthesis, Characterization and Magnetic Susceptibility of the Heavy Fermion Transition Metal Oxide LiV_{2}O_{4}
• Dynamics of Magnetic Defects in Heavy Fermion LiV2O4 from Stretched Exponential 7Li NMR Relaxation
• Heavy Fermion Behaviors in LiV_{2}O_{4}
• Microscopic Magnetic Properties of (V${}_{1-x}$Ti${}_x$)${}_2$O${}_3$ near the Phase Boundary of the Metal-Insulator Transition

Cited by in corpus (3)

• Crystallography, magnetic susceptibility, heat capacity, and electrical resistivity of heavy fermion LiV${}_2$O${}_4$ single crystals grown using a self-flux technique
• ^{7}Li NMR Study of Heavy Fermion LiV2O4 Containing Magnetic Defects
• Absence of structural correlations of magnetic defects in heavy fermion LiV2O4