Disorder-induced ferromagnetism in CaRuO3 -: art. no. 172403

被引：105

作者：

He, T ^{[1
]}

Cava, RJ

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08540 USA

[2] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08540 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.63.172403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic ground state of perovskite structure CaRuO3 has been enigmatic for decades. Here we show that paramagnetic CaRuO3 can be made ferromagnetic by very small amounts of partial substitution of Ru by Ti. Magnetic hysteresis loops are observed at 5 K for as little as 2% Ti substitution. Ti is nonmagnetic and isovalent with Ru, indicating that the primary effect of the substitution is the disruption of the magnetic ground state of CaRuO3 through disorder. The data suggest that CaRuO3 is poised at a critical point between ferromagnetic and paramagnetic ground states.

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页数：4

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