Transport and Magnetic Properties of Ca3Mn2O7 Ceramic

被引：1

作者：

Jung, Woo-Hwan ^{[1
]}

机构：

[1] Howon Univ, Div Lighting, Chunbuk 573718, South Korea

来源：

JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2005年 / 42卷 / 09期

关键词：

Adiabatic; Non-adiabatic; Small polaron; Thermoelectric power;

D O I：

10.4191/kcers.2005.42.9.613

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present the results of a combined magnetization, dc and magneto-transport study of the n = 2 Ruddlesden-Popper compound Ca3Mn2O7. The negative thermoelectric powder is observed. The magnetic measurement data show that there is sharp magnetic transition at 134 K. However, the dc and magnetoresistance of Ca3Mn2O7 show no particular transport. Transport properties of the compound Ca3Mn2O7 are interpreted in terms of activated hopping of small polarons in non-adiabatic regime. Polarons are most probably fonned around Mn3+ sites created by oxygen sub-stoichiometry.

引用

页码：613 / 617

页数：5

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