Preisach analysis of two ferromagnetic perovskites: La{sub 0.95}Mg{sub 0.05}MnO{sub 3} and La{sub 0.5}Sr{sub 0.5}CoO{sub 3}
Measurements of the major hysteresis loop and of the temperature dependence of the field cooled and zero field cooled moment in applied fields less than the coercive field have been performed on two ferromagnetic perovskites La{sub 0.95}Mg{sub 0.05}MnO{sub 3} and La{sub 0.5}Sr{sub 0.5}CoO{sub 3}. The data have been analyzed within the framework of a generalized Preisach model which includes thermal fluctuations, critical effects, and a temperature dependent distribution of free energy barriers. The analysis shows that the response functions of the manganese perovskite are dominated by the growth of the anisotropy barriers, while in the cobalt perovskite, thermal fluctuations and barrier growth play a roughly equal role. {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204019
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 89; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
La{sub 0.5}Sr{sub 0.5}CoO{sub 3}/Pb(Nb{sub 0.04}Zr{sub 0.28}Ti{sub 0.68})O{sub 3}/La{sub 0.5}Sr{sub 0.5}CoO{sub 3} thin film heterostructures on Si using TiN/Pt conducting barrier
Magnetic relaxation behavior in La{sub 0.5}Ca{sub 0.5}MnO{sub 3} and Nd{sub 0.5}Sr{sub 0.5}MnO{sub 3}