MPI für Festkörperforschung / FKF Publikationen 2001 |
|Metallic ferromagnetism in Ni-doped La0.7Sr0.3CoO3|
|Authors:||Wang, Z. H.; Wang, F. W.; Chen, X.; Li, R. W.; Shen, B. G.|
|Date of Publication (YYYY-MM-DD):||2001|
|Title of Journal:||Journal of Applied Physics|
|Issue / Number:||1|
|Abstract / Description:||The structure, magnetization, and electrical transport of
perovskite cobaltites La0.7Sr0.3Co1-yNiyO3 have been studied.
It is found that the substitution of Ni for Co induces no
apparent changes in bond length and angle in the Co(Ni)-O
network, and only moderately suppresses the ferromagnetism.
Moreover, a retention of the metallic conduction has been
observed from y=0 to 0.2, which is in strong contrast to the
reported insulating state of the other Co site doped
La0.7Sr0.3CoO3. A double-exchange-like interaction between Ni
ion and its neighboring Co ion is suggested to explain the
experimental results. (C) 2002 American Institute of Physics.
|External Publication Status:||published|
|Communicated by:||Michaela Asen-Palmer|
|Affiliations:||MPI für Festkörperforschung|
|External Affiliations:||; Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany
; Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China
; Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
; Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China
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