Enhanced magnetoresistance of La2/3Ca1/3MnO3/Sr2FeMoO6 core/cell nanocrystalline composites synthesized by polymer-network sol-gel method
Published online by Cambridge University Press: 31 January 2011
This paper reports that the homogeneous nanocrystalline LCMO(core)/SFMO(shell) and SFMO(core)/LCMO(shell) series composites are successively synthesized using polymer-network sol-gel method. With the increase of SFMO content in the composites, the remanence magnetization Mr increases while the coercivity Hc decreases. This fact indicates that the ferromagnetic phase boosts up. Moreover, the LFMR (1 T) of the composites succeeds the preponderances of both SFMO and LCMO; i.e., the magnetoresistance (MR) value increases from 300 to 5 K and keeps a high level. In particular, the MR value of the LS-8 composite reaches 55% at 5 K and 7 T.
- Journal of Materials Research , Volume 25 , Issue 2 , February 2010 , pp. 255 - 259
- Copyright © Materials Research Society 2010