Magnetic behavior of nanocrystals of the spin-chain system Ca3Co2O6: Absence of multiple steps in the low-temperature isothermal magnetization

被引：23

作者：

Mohapatra, Niharika ^{[1
]}

Iyer, Kartik K. ^{[1
]}

Das, Sitikantha D. ^{[1
]}

Chalke, B. A. ^{[1
]}

Purandare, S. C. ^{[1
]}

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

机构：

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

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 14期

关键词：

ball milling; calcium compounds; ferromagnetic materials; frustration; magnetic susceptibility; magnetic transitions; magnetisation; nanostructured materials; spin systems; ONE-DIMENSIONAL CA3CO2O6; TRIANGULAR LATTICE; COMPOUND CA3CO2O6; SINGLE-CRYSTAL; ANOMALIES;

D O I：

10.1103/PhysRevB.79.140409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report that the major features in the temperature dependence of dc and ac magnetizations of a well-known spin-chain compound Ca3Co2O6, which has been known to exhibit two complex magnetic transitions due to geometrical frustration (one near 24 K and the other near 10 K), are found to be qualitatively unaffected in its nanomaterials synthesized by high-energy ball milling. However, the multiple steps in isothermal magnetization-a topic of current interest in low-dimensional systems-known for the bulk form well below 10 K is absent in the nanoparticles. We believe that this finding will be useful to the understanding of the "step" magnetization behavior of such spin-chain systems.

引用

页数：4

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