Observation of itinerant ferromagnetism in layered Sr3Ru2O7 single crystals

被引：96

作者：

Cao, G

McCall, S

Crow, JE

机构：

[1] National High Magnetic Field Laboratory, Florida State University, Tallahassee

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.55.R672

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ST(3)RU(2)O(7) is a layered compound and a member of the Ruddlesden-Popper-type compound series of S(n+1)RU(n)O(3n+1) (n=1, 2, and n=infinity) with n=2. Single crystals of Sr3Ru2O7 were grown and characterized, providing an unambiguous indication of a rich ferromagnetic state with T-c=104 K and a saturated moment of 1.30+/-0.05 mu(B)/Ru at T=5 K. Among many interesting features, a magnetic spin reorientation transition is observed, suggesting that moments in the ordered state order ferromagnetically with a slight canting on adjacent spins. Negative magnetoresistance, commonly occurring in ferromagnets, is relatively large (19% at 10 T and T=30 K), suggesting a significant suppression of spin-flip scattering by the applied magnetic field. The results are discussed with comparisons drawn with sister compounds Sr2RuO4, SrRuO3 and other related systems.

引用

页码：R672 / R675

页数：4

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