ZnFe2O4 nanoparticles for ferrofluids: A combined XANES and XRD study

被引：47

作者：

Gomes, J. A. ^{[1
]}

Azevedo, G. M. ^{[2
]}

Depeyrot, J. ^{[1
]}

Mestnik-Filho, J. ^{[3
]}

da Silva, G. J. ^{[1
]}

Tourinho, F. A. ^{[4
]}

Perzynski, R. ^{[5
]}

机构：

[1] Univ Brasilia, Inst Fis, Complex Fluids Grp, BR-70919970 Brasilia, DF, Brazil

[2] Univ Fed Rio Grande do Sul, Dept Fis, BR-91501970 Porto Alegre, RS, Brazil

[3] IPEN CNEN SP, BR-05508000 Sao Paulo, Brazil

[4] Univ Brasilia, Inst Quim, Complex Fluids Grp, BR-70919970 Brasilia, DF, Brazil

[5] Univ Paris 06, Lab PECSA, F-75005 Paris, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2011年 / 323卷 / 10期

关键词：

Ferrite magnetic nanoparticle; Cation distribution; X-ray Diffraction; X-ray Absorption Near Edge Spectroscopy (XANES); LAYERED MAGNETIC FLUIDS; ZINC FERRITE; POLYOL MEDIUM; HYDROLYSIS; PARTICLES;

D O I：

10.1016/j.jmmm.2010.11.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A soft-chemistry method is used to synthesize zinc ferrite nanoparticles to prepare a magnetic fluid. We investigate here their internal structure by X-ray Absorption Near Edge Spectroscopy (XANES) and X-Ray Diffraction (XRD). A cross analysis of XANES and Rietveld refinement of XRD spectra shows non-equilibrium site occupancy with respect to bulk zinc ferrite, suggesting a cation redistribution that enhances the magnetic and magneto-optical responses of the nanoparticles. (C) 2010 Published by Elsevier B.V.

引用

页码：1203 / 1206

页数：4

共 17 条

[1] Influence of the synthesis parameters on the cationic distribution of ZnFe2O4 nanoparticles obtained by forced hydrolysis in polyol medium [J].

Ammar, S ;

Jouini, N ;

Fiévet, F ;

Stephan, O ;

Marhic, C ;

Richard, M ;

Villain, F ;

Moulin, CCD ;

Brice, S ;

Sainctavit, P .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2004, 345 :658-662

[2] Magnetic properties of zinc ferrite nanoparticles synthesized by hydrolysis in a polyol medium [J].

Ammar, Souad ;

Jouini, Noureddine ;

Fievet, Fernand ;

Beji, Zyed ;

Smiri, Leila ;

Moline, Philippe ;

Danot, Michel ;

Greneche, Jean-Marc .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (39) :9055-9069

[3] Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure [J].

Ankudinov, AL ;

Ravel, B ;

Rehr, JJ ;

Conradson, SD .

PHYSICAL REVIEW B, 1998, 58 (12) :7565-7576

[4] Magnetic properties of nanostructured ferrimagnetic zinc ferrite [J].

Chinnasamy, CN ;

Narayanasamy, A ;

Ponpandian, N ;

Chattopadhyay, K ;

Guérault, H ;

Greneche, JM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (35) :7795-7805

[5] Static magneto optical birefringence of new electric double layered magnetic fluids [J].

Depeyrot, J ;

da Silva, GJ ;

Alves, CR ;

Sousa, EC ;

Magalhaes, M ;

Neto, AMF ;

Sousa, MH ;

Tourinho, FA .

BRAZILIAN JOURNAL OF PHYSICS, 2001, 31 (03) :390-397

[6] Synthesis of core-shell ferrite nanoparticles for ferrofluids: Chemical and magnetic analysis [J].

Gomes, Juliano de A. ;

Sousa, Marcelo H. ;

Tourinho, Francisco A. ;

Aquino, Renata ;

da Silva, Geraldo J. ;

Depeyrot, Jerome ;

Dubois, Emmanuelle ;

Perzynski, Regine .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (16) :6220-6227

[7] Magnetic properties of partially-inverted zinc ferrite aerogel powders [J].

Hamdeh, HH ;

Ho, JC ;

Oliver, SA ;

Willey, RJ ;

Oliveri, G ;

Busca, G .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (04) :1851-1857

[8] STRUCTURE-ANALYSIS OF COPRECIPITATED ZNFE2O4 BY EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE [J].

JEYADEVAN, B ;

TOHJI, K ;

NAKATSUKA, K .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :6325-6327

[9] CATION DISTRIBUTION IN ZNFE2O4 FINE PARTICLES STUDIED BY NEUTRON POWDER DIFFRACTION [J].

KAMIYAMA, T ;

HANEDA, K ;

SATO, T ;

IKEDA, S ;

ASANO, H .

SOLID STATE COMMUNICATIONS, 1992, 81 (07) :563-566

[10]

Larson C., 2001, GEN STRUCTURE ANAL S

← 1 2 →