La(Sr,Pb)MnO3 thin films through solution techniques

被引：18

作者：

Maurin, I ^{[1
]}

Barboux, P ^{[1
]}

Lassailly, Y ^{[1
]}

Boilot, JP ^{[1
]}

机构：

[1] Ecole Polytech, Phys Mat Condensee Lab, F-91128 Palaiseau, France

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 06期

关键词：

D O I：

10.1021/cm970664g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thin films of(La0.9Sr0.1)MnO3 have been deposited using a citrate-ethylene glycol method. Si (100) substrates yield polycrystalline films, whereas MgO (100) substrates favor the nucleation of textured films. However, the rough calcination of organics results in a granular morphology with insulating grain boundaries. Sintering can be strongly enhanced by addition of small amounts of lead oxide. When substituted for strontium, lead does not drastically affect the physical properties of the perovskite phase, but allows the formation of a percolative conduction path. Conductive films have been obtained through heat-treatment at temperatures as low as 600 degrees C. They show a magnetoresistance effect (Delta p/p(0)) of 65% at 175 K in fields up to 8 T.

引用

页码：1727 / 1732

页数：6

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