Polaron transport in n=3 ruddlesden-popper phase Sr4Mn1.5Fe1.5O9.72 ceramics

The electrical and magnetic properties in polycrystalline ceramics of Ruddlesden-Popper type Sr4Mn1.5Fe1.5O9.72 were investigated as a function of temperature. Sr4Mn1.5Fe1.5O9.72 showed a sudden transition to a complicated spin-glass state at 22 K. The temperature dependence of the electrical conduc...

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Veröffentlicht in:	Journal of materials science 2006-05, Vol.41 (10), p.3143-3145
1. Verfasser:	JUNG, Woo-Hwan
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Electrotechnical and electronic ceramics Exact sciences and technology Materials science Technical ceramics
Online-Zugang:	Volltext
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Zusammenfassung:	The electrical and magnetic properties in polycrystalline ceramics of Ruddlesden-Popper type Sr4Mn1.5Fe1.5O9.72 were investigated as a function of temperature. Sr4Mn1.5Fe1.5O9.72 showed a sudden transition to a complicated spin-glass state at 22 K. The temperature dependence of the electrical conductivity was characteristic of an insulator, and the charge carriers responsible for conduction were strongly localised. This electrical and magnetic study showed that small polarons were formed in the layered perovskite. 16 refs.
ISSN:	0022-2461 1573-4803
DOI:	10.1007/s10853-006-6435-9