Published July 2004
| Version v1
Journal article
Electrical properties of solid solutions of the Li6MoN4-Li7NbN4 and Li6WN4-Li7TaN4 systems
- 1. Inst. Vysokotemperaturnoj Ehlektrokhimii, UrO RAN Ekaterinburg (Russian Federation)
- 2. Inst. Fiziki Metallov UrO RAN, Ekaterinburg (Russian Federation)
Description
Phase ratios electric properties of crystallization products in the systems Li6MoN4-Li7NbN4 and Li6WN4-Li7TaN4 were studied. It is shown that in both systems there are continuous series of solid solutions, their lithium-cationic conductivity reducing after mutual doping. Activation energies of the far-range (from electric conductivity and short-range (on the basis of 7Li NMR data) motion of lithium carriers, equal to 55 and 46 kJ/mol and 25 and 14 kJ/mol for the initial compounds of the first and second systems, respectively, were determined. The great difference in energies of the far- and short-range motions is explained by the great contribution of the Coulomb correlation to lithium carrier jumps in both systems
Abstract (Russian)
Исследованы фазовые соотношения и электрические свойства продуктов кристаллизации в системах Li6MoN4-Li7NbN4 и Li6WN4-Li7TaN4. Показано, что в обеих системах существуют непрерывные ряды твердых растворов, литийкатионная проводимость которых уменьшается при взаимном допировании. Определены энергии активации дальнего (из электропроводности) и ближнего (из данных ЯМР на ядрах 7Li) движений литиевых носителей, равные 55 и 46 кДж/моль, и 25 и 14 кДж/моль для исходных соединений первой и второй систем соответственно. Столь большая разница энергий дальнего и ближнего движений объяснена большим вкладом кулоновской корреляции прыжков литиевых носителей в обеих системахAdditional details
Additional titles
- Original title (Russian)
- Электрические свойства твердых растворов в системах Ли
Publishing Information
- Journal Title
- Ehlektrokhimiya
- Journal Volume
- 40
- Journal Issue
- 7
- Journal Page Range
- p. 884-888
- ISSN
- 0424-8570
- CODEN
- ELKKAX
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 37094420
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ACTIVATION ENERGY; CHARGE CARRIERS; CHEMICAL COMPOSITION; CRYSTAL LATTICES; IONIC CONDUCTIVITY; LATTICE PARAMETERS; LITHIUM NITRIDES; MOLYBDENUM NITRIDES; NIOBIUM NITRIDES; PHASE STUDIES; SOLID SOLUTIONS; TANTALUM NITRIDES; TEMPERATURE RANGE 0400-1000 K; TUNGSTEN NITRIDES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ENERGY; HOMOGENEOUS MIXTURES; LITHIUM COMPOUNDS; MIXTURES; MOLYBDENUM COMPOUNDS; NIOBIUM COMPOUNDS; NITRIDES; NITROGEN COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES; REFRACTORY METAL COMPOUNDS; SOLUTIONS; TANTALUM COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS
Optional Information
- Notes
- 8 refs., 4 figs., 2 tabs.