La2/3Ca1/3MnO3Nanoparticles with Novel Magnetoresistance Property

2004 Bulletin of the Korean Chemical Society (Print)  
nanocrystalline powders have been successfully prepared by modified citrate pyrolysis process. The obtained LCMO nanoscale grains have a mean particle size of about 30 nm under optimal treatment conditions. The particle size can be controlled by adjusting processing parameters, such as treatment temperature and calcination time. X-ray diffraction, SEM and magnetoresistance effect were employed to study the crystal structure, morphology and magnetic property of these nanosized powders. A novel
more » ... powders. A novel MR effect (MR > 45% (0 K < T < 340 K)) at room temperature has been found.
doi:10.5012/bkcs.2004.25.2.182 fatcat:a4rt4ci3fnaddlkg66ih43hxbi