Specific physical properties of nanocrystalline (La0.65Sr0.35)0.8Mn1.2O3 ± Δ samples obtained by cold isostatic pressing

被引：3

作者：

Akimov, G. Ya. ^{[1
]}

Prylypko, S. Yu. ^{[1
]}

Revenko, Yu. F. ^{[1
]}

Timchenko, V. M. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Galkin Physicotech Inst, UA-83114 Donetsk, Ukraine

来源：

PHYSICS OF THE SOLID STATE | 2009年 / 51卷 / 04期

关键词：

MANGANITES; SIZE;

D O I：

10.1134/S1063783409040210

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Single-phase powders of manganites (La0.65Sr0.35)(0.8)Mn1.2O3 +/- Delta with average crystallite sizes of 30, 50, and 500 nm were produced by co-precipitation. The samples studied were obtained by cold isostatic pressing of powders at a pressure of 1 GPa without subsequent sintering. It is shown that the size of particles has a significant effect on the electromagnetic properties of the manganite samples. As the crystallite size decreases, the electrical resistance and coercive force increase and the tunneling magnetoresistance of the samples and the Curie temperature decrease.

引用

页码：770 / 772

页数：3

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