Magnetic ordering in the fine particles of some bulk Pauli paramagnets

被引：10

作者：

Das, Sitikantha D. ^{[1
]}

Jammalamadaka, S. Narayana ^{[1
]}

Iyer, Kartik K. ^{[1
]}

Sampathkumaran, E. V. ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 02期

关键词：

ball milling; cerium alloys; cobalt alloys; ferromagnetic materials; Kondo effect; lutetium alloys; magnetic moments; magnetic particles; paramagnetic materials; ruthenium alloys; scandium alloys; silicon alloys; zirconium alloys; ITINERANT-ELECTRON METAMAGNETISM; INTERMETALLIC COMPOUNDS; KONDO-LATTICE; CERU2SI2; BEHAVIOR; SCCO2; LUCO2; YCO2;

D O I：

10.1103/PhysRevB.80.024401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fine particles of some of the extensively studied "enhanced" Pauli paramagnets, LuCo2, ScCo2, ZrCo2, and CeRu2Si2, have been prepared by high-energy ball milling and investigated for their magnetic behaviors. In the case of Co systems, these particles show ferromagnetic features even at room temperature. Even in the case of CeRu2Si2-a well-known Kondo lattice which is nonmagnetic in the bulk form, features attributable to the onset of magnetic order below about 8 K could be seen in fine particles. The magnitudes of the magnetic moment of these small particles at high fields are sufficiently large to conclude that the observed magnetic ordering is not just a surface effect. This transformation to magnetic ordering in small particles could be widespread among enhanced Pauli paramagnets.

引用

页数：6

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