Cluster Glass Behavior of Doped Cobaltite Nd0.80Sr0.20CoO3

Yi Yun Yang

doi:10.4028/www.scientific.net/AMR.413.524

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 413Cluster Glass Behavior of Doped Cobaltite...

Cluster Glass Behavior of Doped Cobaltite Nd_0.80Sr_0.20CoO₃

Abstract:

In this paper, the rare earth cobaltite Nd_0.80Sr_0.20CoO₃ sample was prepared using conventional solid state reaction method. The dc magnetization, ac susceptibility, hysteresis loop of polycrystalline Nd_0.80Sr_0.20CoO₃ sample was carried out using the physical properties measurement system of Quantum Design. A dynamic analysis of ac susceptibility implies cluster glass transition temperature T_SG=72.06 K which occurs much higher by 25 K than that point at which the dc magnetization reaches a maximum. The cluster glass behavior of polycrystalline Nd_0.80Sr_0.20CoO₃sample, which originates from the phase separation at low temperature, was systematically investigated in this paper. It was found that the sample has a small spontaneous magnetization and the weak frequency dependent peak so that we assume that the sample is cluster-glass.

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Periodical:

Advanced Materials Research (Volume 413)

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524-528

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.413.524

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Online since:

December 2011

Authors:

Yi Yun Yang

Keywords:

Cluster Glass, Ferrimagnetic Ordering, Phase Separation

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