N-type current-voltage characteristics of manganites

被引：4
|
作者：
Karpasyuk, V. K. [1 ]
Badelin, A. G. [1 ]
Smirnov, A. M. [1 ]
Sorokin, V. V. [1 ]
Evseeva, A. [1 ]
Doyutova, E. [1 ]
Shchepetkin, A. A. [2 ]
机构：
[1] Astrakhan State Univ, 20A Tattischev Str, Astrakhan 414056, Russia
[2] RAS, Inst Met, Ural Div, Ekaterinburg 620016, Russia
来源：
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) | 2010年 / 200卷
关键词：
TRANSITION;
D O I：
10.1088/1742-6596/200/5/052026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Experimental data are shown for ceramic samples of La-Sr manganites with substitution of Mn by Zn, containing 0.15, 0.17 or 0.19 f.u. of Mn4+ (under the condition that concentration of oxygen is stoichiometric). Bulk manganites were prepared by the traditional solid state reactions in air. All samples were single phase and crystallized in the orthorhombic structure. Dc I-V characteristics at different temperatures were measured without and with magnetic field, the strength of which was 9200 Oe. All I-V characteristics of manganites reveal the regions with negative differential resistance. The samples of La0.885Sr0.115Mn0.925Zn0.075O3 exhibit novel multi-peak N-type current-voltage characteristics, particularly regular in the presence of magnetic field.
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页数：4
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