Magnetic and transport relaxation property of La0.85Sr0.15CoO3 single crystals
Abstract
Here, we present a comprehensive investigation of the dc magnetization and magnetotransport studies on La0.85Sr0.15CoO3 single crystals grown by the optical float zone method. The spin freezing temperature in the ac susceptibility study shifts to lower value at higher dc field and this is well described by the de Almeida-Thouless line which is the characteristic of SG behavior. The Magnetotransport study shows that the sample exhibits a huge negative MR of ∼70% at 10 K which monotonically decreases with the increase in temperature. Besides, the magnetization and the resistivity relaxation give strong indication that the MR scales with sample's magnetization. In essence, all the present experimental findings evidence the SG behavior of La0.85Sr0.15CoO3 single crystals.
- Publication:
-
Solid State Physics
- Pub Date:
- February 2013
- DOI:
- 10.1063/1.4791451
- Bibcode:
- 2013AIPC.1512.1142M
- Keywords:
-
- lanthanum compounds;
- magnetic susceptibility;
- magnetisation;
- magnetoresistance;
- spin glasses;
- strontium compounds;
- zone melting;
- 72.20.My;
- 75.30.Cr;
- 75.47.Lx;
- 75.50.Lk;
- 75.60.Ej;
- 81.10.Fq;
- Galvanomagnetic and other magnetotransport effects;
- Saturation moments and magnetic susceptibilities;
- Manganites;
- Spin glasses and other random magnets;
- Magnetization curves hysteresis Barkhausen and related effects;
- Growth from melts;
- zone melting and refining