LI-7 NMR IN ELECTROCHEMICALLY INTERCALATED GAMMA-LIXV2O5 BRONZES (0.95-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1.9)

被引：29

作者：

COCCIANTELLI, JM ^{[1
]}

SUH, KS ^{[1
]}

SENEGAS, J ^{[1
]}

DOUMERC, JP ^{[1
]}

SOUBEYROUX, JL ^{[1
]}

POUCHARD, M ^{[1
]}

HAGENMULLER, P ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1992年 / 53卷 / 01期

关键词：

NMR STUDY; MAS; VANADIUM BRONZES; LITHIUM INTERCALATION; VANADIUM OXIDE; GAMMA-LIXV2O5;

D O I：

10.1016/0022-3697(92)90012-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

MAS spectra (recorded at 5 kHz) of gamma-LixV2O5 (0.95 less-than-or-equal-to x less-than-or-equal-to 1.9) allow the observation of an important narrowing of the NMR linewidth. The interpretation of the results, in agreement with previous X-ray and neutron diffraction studies of Li0.95V2O5, shows that the lithium atoms occupy various sites in the gamma-phase network for x > 1. Static Q-echo spectra reveal broader linewidths which may be attributed to strong magnetic interactions of the lithium nuclei with localized V4+ magnetic moments. The quadrupolar effect of Li0.95V2O5 calculated on the base of an ionic charge model (nu(m calc) = 17 kHz) is in good agreement with the experimental value nu(m exp) = 18 kHz.

引用

页码：51 / 55

页数：5

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