Shell pressure on the core of MnO/Mn3O4 core/shell nanoparticles

被引：12

作者：

Silva, N. J. O. ^{[1
,2
]}

Karmaoui, M. ^{[1
,2
]}

Amaral, V. S. ^{[1
,2
]}

Puente-Orench, I. ^{[3
,4
]}

Campo, J. ^{[3
,4
]}

da Silva, I. ^{[5
,6
]}

Ibarra, A. ^{[7
]}

Bustamante, R. ^{[8
]}

Millan, A. ^{[8
]}

Palacio, F. ^{[8
]}

机构：

[1] Univ Aveiro, Dept Fis, P-3810193 Aveiro, Portugal

[2] Univ Aveiro, CICECO, P-3810193 Aveiro, Portugal

[3] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Zaragoza, Spain

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[5] European Synchrotron Radiat Facil, SpLine Spanish CRG Beamline, F-38043 Grenoble 9, France

[6] CSIC, ICMM, E-28049 Madrid, Spain

[7] Univ Zaragoza, INA, LMA, Zaragoza 50018, Spain

[8] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Dept Fis Mat Condensada,Fac Ciencias, E-50009 Zaragoza, Spain

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 22期

关键词：

MAGNETIC-PROPERTIES; PHASE-TRANSITIONS; STRAINED SILICON; MNO; OXIDE; NANOCRYSTALS; EMISSION; FEO;

D O I：

10.1103/PhysRevB.87.224429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here we show that spontaneous oxidation of MnO nanoparticles into MnO/Mn3O4 core/shell nanoparticles has the effect of a local pressure, decreasing the MnO cell parameter and increasing strain, resulting in the increase of the MnO antiferromagnetic/paramagnetic transition temperature T-N. These effects are more severe in smaller nanoparticles.

引用

页数：8

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