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

页码：321 / 325

页数：5

共 50 条

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