Document Detail


Crystal structure and spin dynamics for the Li(9)V(3)P(8-δ)O(29-δ') insertion electrode system with a multiple-electron reaction.
MedLine Citation:
PMID:  22277252     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The crystal structure, the electron configurations of V ions and the spin dynamics for the Li(9)V(3)P(8-δ)O(29-δ') insertion electrode system that exhibits a multiple-electron reaction are explored through measurements of x-ray four-circle diffraction, magnetization and nuclear magnetic resonance. The structure for the stoichiometric composition with δ = δ' = 0 is refined precisely and the effective valences of all ions are determined. The electron configurations of V ions for the system annealed at various temperatures are considered in the framework of intermediate crystal field approach. For the system that often exhibits the charge-discharge performance better than the double-electron reaction, the spin dynamics mainly for the tetrahedral Li3 ions is understood on the basis of the relaxation mechanisms of quadrupole coupling and resonance shift anisotropy caused by the dipolar field of V ions. The correlation time of fluctuating fields is proportional to the temperature above 30 K, below which it follows the fractional Debye-Stokes-Einstein relation.
Authors:
Masashige Onoda; Satoshi Ikeda; Takehiko Ishibashi
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-26
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  24     ISSN:  1361-648X     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  085402     Citation Subset:  -    
Affiliation:
Institute of Physics, University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan.
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