A sonochemical-assisted synthesis and annealing temperature effect of La0.7Sr0.3MnO3 nanoparticles
Abstract
This paper reports on the sonochemical-assisted synthesis of La0.7Sr0.3MnO3 (LSMO) nanoparticles (NPs) which have a single-crystalline perovskite structure. The average particle size of LSMO NPs was controlled from about 40 to 120 nm by changing the annealing temperatures from 750 to 1050°C. The particle size, electrical resistivity, and ferromagnetic transition temperature of LSMO NPs were strongly dependent on the annealing temperature. A substantial decrease in resistivity and an enhancement in the insulator-metal transition temperature were found on increasing the annealing temperature. Furthermore, the enhancement in magnetization and paramagnetic-ferromagnetic (PM-FM) transition temperatures was observed as the annealing temperature increases.
- Publication:
-
Applied Physics A: Materials Science & Processing
- Pub Date:
- May 2009
- DOI:
- 10.1007/s00339-008-4952-x
- Bibcode:
- 2009ApPhA..95..567C
- Keywords:
-
- 81.05.Y;
- 75.50.K;
- 73.61.T;
- 61.46;
- 71.24