Structural and magnetic heterogeneities, phase transitions, 55Mn NMR, and magnetoresistive properties of La0.6Sr0.3-xBixMn1.1O3

被引：5
|
作者：
Pashchenko, A. V. [1 ]
Pashchenko, V. P. [1 ]
Revenko, Yu. F. [1 ]
Prokopenko, V. K. [1 ]
Mazur, A. S. [1 ]
Turchenko, V. A. [1 ]
Burkhovetskii, V. V. [1 ]
Sil'cheva, A. G. [2 ]
Konstantinov, P. P. [2 ]
Gufan, Yu. M. [3 ]
机构：
[1] Natl Acad Sci Ukraine, Donetsk Engn Phys Inst, UA-83114 Donetsk, Ukraine
[2] Luhansk Taras Shevchenko Natl Univ, UA-91011 Lugansk, Ukraine
[3] So Fed Univ, Inst Phys Res, Rostov Na Donu 344090, Russia
来源：
PHYSICS OF THE SOLID STATE | 2013年 / 55卷 / 02期
关键词：
TEMPERATURE; MANGANITES;
D O I：
10.1134/S1063783413020236
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The structural, resistive, magnetic, and magnetoresistive properties of the La0.6Sr0.3 - x Bi (x) Mn1.1O3 ceramics have been studied. The substitution of Bi ions for Sr ions increases the lattice parameter of the rhombohedral perovskite structure, decreases the metal-semiconductor and ferromagnet-paramagnet phase transition temperatures and the peak of the magnetoresistive effect, and increases the resistivity, approaching the system to the ferroelectric state. The Mn-55 NVR study indicates on the high-frequency Mn3+ a dagger" Mn4+ superexchange and heterogeneity of the valence and magnetic states of manganese due to the nonuniformity of distribution of all ions and defects. The phase diagram has been constructed, which shows a strong correlation between the structural, magnetic, and magnetoresistive properties.
引用
收藏
页码：321 / 325
页数：5
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