Abstract
We have studied La0.8Sr0.2MnO3 (LSMO) nanoparticle-decorated carbon nanotubes (CNTs) by means of the electron spin resonance (ESR) spectroscopy in view of our previous work on the magnetic and electrical properties of the system. One of the line components of the ESR spectrum reflected a paramagnetic-superparamagnetic phase transition at T SP∼200 K, which is accompanied by a concomitant metal-insulator transition (MIT) associated with charge transport taking place through the CNTs network triggered by the LSMO nanoparticles. On the other hand, another ESR line component revealed anomalies at TWL∼170 K as well, attributable to a 2D weak localization effect of the spin/charge carriers. Thus, magnetic interactions and dynamics of the distinct spin species were sensitively reflected in the LSMO-CNTs system.
Original language | English |
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Pages (from-to) | 142-144 |
Number of pages | 3 |
Journal | Materials Research Bulletin |
Volume | 59 |
DOIs | |
State | Published - Nov 2014 |
Keywords
- A. Magnetic materials
- D. Electronic paramagnetic resonance (EPR)