Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-11-13
Phys. Rev. B 74, 184417 (2006); 6 pages
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 7 figures; Phys. Rev. B (accepted)
Scientific paper
10.1103/PhysRevB.74.184417
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.
Das Sourin
Johnston David C.
Ma Xiao
Niazi Asad
Zong Xuemei
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