Tailoring of magnetocaloric response in nanostructured materials: Role of anisotropy

被引：55

作者：

Franco, Victorino ^{[1
]}

Pirota, Kleber R. ^{[2
]}

Prida, Victor M. ^{[3
]}

Neto, Antonio Maia J. C. ^{[4
,5
]}

Conde, Alejandro ^{[1
]}

Knobel, Marcelo

Hernando, Blanca ^{[3
]}

Vazquez, Manuel ^{[2
]}

机构：

[1] Univ Seville, CSIC, Dept Fis Mat Condensada, ICMSE, POB 1065, E-41080 Seville, Spain

[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

[3] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain

[4] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[5] Fed Univ Para, Dept Fis, BR-66075110 Belem, Para, Brazil

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.77.104434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetocaloric response of an ensemble of oriented uniaxial magnetic objects, perpendicularly magnetized to their easy axes, for temperatures close to the blocking temperature is calculated with the aim of demonstrating that the control of the sample's microstructure makes up an effective way to tailor its magnetocaloric response. Coexisting positive and negative magnetocaloric effect (MCE) is found for a model material with a single magnetic phase transition. Both MCE regimes are controlled by the magnitude of the applied magnetic field. As a proof of concept, experimental results for arrays of self-assembled ferromagnetic nanowires embedded into highly ordered nanoporous anodic alumina templates are shown, suggesting the validity of the numerical calculations.

引用

页数：7

共 52 条

[1] Magnetic entropy change in Fe74-xCrxCu1Nb3Si13B9 (x=14 and 17) amorphous alloys [J].