Finite-size effects in single chain magnets: An experimental and theoretical study

被引：120

作者：

Bogani, L

Caneschi, A

Fedi, M

Gatteschi, D

Massi, M

Novak, MA

Pini, MG

Rettori, A

Sessoli, R ^{[1
]}

Vindigni, A

机构：

[1] Univ Florence, Dipartimento Chim, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, INSTM, I-50019 Sesto Fiorentino, Italy

[3] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy

[4] Univ Florence, Ist Nazl Fis Nucl, I-50019 Sesto Fiorentino, Italy

[5] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

[6] CNR, Ist Fis Applicata Nello Carrara, I-50019 Sesto Fiorentino, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.92.207204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The problem of finite-size effects in s=1/2 Ising systems showing slow dynamics of the magnetization is investigated introducing diamagnetic impurities in a Co2+-radical chain. The static magnetic properties have been measured and analyzed considering the peculiarities induced by the ferrimagnetic character of the compound. The dynamic susceptibility shows that an Arrhenius law is observed with the same energy barrier for the pure and the doped compounds while the prefactor decreases, as theoretically predicted. Multiple spin reversal has also been investigated.

引用

页码：207204 / 1

页数：4

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