Growth and investigation of doped rare earth manganite single crystals

被引：105

作者：

Shulyatev, D ^{[1
]}

Karabashev, S ^{[1
]}

Arsenov, A ^{[1
]}

Mukovskii, Y ^{[1
]}

机构：

[1] Moscow Steel & Alloys Inst, Moscow 117936, Russia

来源：

JOURNAL OF CRYSTAL GROWTH | 1999年 / 198卷

关键词：

floating zone melting; single crystal; manganites; colossal magnetoresistance;

D O I：

10.1016/S0022-0248(98)01146-4

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

When growing (La(1-x)A(x))(y)MnO3 (A = Sr, Ca; x = 0-0.3) single crystals by floating zone melting for colossal magnetoresistive effect investigation it was observed that crystallisation nature depends on y = (La + A)/Mn ratio in a melt. Stable growth of undoped, Sr substituted (up to x = 0.3) and Ca substituted (x < 0.1) single crystals takes place in air when y = 0.9-0.95. In the case of high rate of Ca substitution (x = 0.2-0.3) stable growth was observed only in oxygen reduced atmosphere. Single crystals of these compounds with mosaicity not more than 0.5 degrees were produced. Electrical and magnetic properties of as-grown and heat-treated samples were studied. (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：511 / 515

页数：5

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