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Nonstoichiometry of LixCu2O2+delta single crystal and its relation to magnetic ordering

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Date
2010
Authors
Yeh, KW
Huang, TW
Ke, CT
Wu, PM
Zhao, L
Chao, WH
Lee, YC
Chen, CL
Wu, MK
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Abstract
We report the first systematic study on the nonstoichiometry of Li/Cu ionic ratios x and oxygen defect concentrations delta in LixCu2O2+delta solid solution. Nonstoichiometric crystals with intentional Li-deficient (x=0.97) or Li-excessive (x=1.06) concentrations were prepared by slow-cooling and floating-zone methods. By applying different oxygen pressures during growth, different magnitudes of oxygen defects were obtained, revealing varied magnetic and electrical properties. Our results strongly suggest that Li/Cu and oxygen nonstoichiometry in these crystals are responsible for the varied temperatures of helimagnetic ordering. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483244]
Type
Journal article
Subject
licu2o2
physics, applied
Permalink
https://hdl.handle.net/10161/3341
Published Version (Please cite this version)
10.1063/1.3483244
Citation
Yeh,K. W.;Huang,T. W.;Ke,C. T.;Wu,P. M.;Zhao,L.;Chao,W. H.;Lee,Y. C.;Chen,C. L.;Wu,M. K.. 2010. Nonstoichiometry of LixCu2O2+delta single crystal and its relation to magnetic ordering. Journal of Applied Physics 108(8): 83919-83919.
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