| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10710210 | Journal of Magnetism and Magnetic Materials | 2005 | 8 Pages |
Abstract
With Ni doping, La0.7Pb0.3Mn1âxNixO3 (x=0-0.5) system exhibits decrease of conductivity and increase of metal-insulator transition temperature. This is considered to occur because of the decrease of effective double exchange (DE) interaction due to Ni doping. The presence of majority of Ni2+ states as indicated by the XPS study, govern the transport and magnetic properties of this system. The spin-wave stiffness constant D, characterising the magnon in the low-temperature (TTp) semiconducting phase showing increase of activation energy as conductivity decreases.
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Authors
Sudipta Pal, Esa Bose, B.K. Chaudhuri, H.D. Yang, S. Neeleshwar, Y.Y. Chen,