Investigation of the origin of glassiness in La0.5Sr0.5CoO3


Autoria(s): Manna, Kaustuv; Elizabeth, Suja; Kumar, Anil PS
Data(s)

07/05/2013

Resumo

A comprehensive magnetic study has been carried out on the two sets of La0.5Sr0.5CoO3 samples with a view to understand the origin of low temperature glassiness in the ferromagnetic state. The samples prepared by the conventional solid-state synthesis method show a low temperature shoulder in both dc magnetization as well as in the ac susceptibility measurements, which exhibit characteristics of glassiness such as the frequency dependence and memory effect. These observations suggest the existence of a distinct low temperature cluster-glass like phase within dominant ferromagnetic phase. But, once the same sample is properly homogenized by repeated grinding and annealing process, the low temperature glassy phase disappears, and it shows a pure ferromagnetic behavior. Our comparative study clearly reveals that the reentrant spin-glass like nature is not intrinsic to La0.5Sr0.5CoO3 system, in fact this is an outcome of the compositional inhomogeneity.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/46792/1/Jou_Appl_Phy_113-7_17E114_2013.pdf

Manna, Kaustuv and Elizabeth, Suja and Kumar, Anil PS (2013) Investigation of the origin of glassiness in La0.5Sr0.5CoO3. In: Journal of Applied Physics, 113 (17). 17E114_1-17E114_3.

Publicador

American Institute of Physics

Relação

http://dx.doi.org/10.1063/1.4793777

http://eprints.iisc.ernet.in/46792/

Palavras-Chave #Physics
Tipo

Journal Article

PeerReviewed