Cation distribution of cobalt ferrite electrosynthesized nanoparticles. A methodological comparison

JOURNAL OF ALLOYS AND COMPOUNDS

卷:739

Article

Sanchez-Marcos, J.¹  Mazario, E.¹  Rodriguez-Velamazan, J. A.²  Salas, E.³  Herrasti, P.¹  Menendez, N.¹ 

[1] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Fis Aplicada, E-28049 Madrid, Spain

[2] Inst Laue Langevin, 6 Rue Jules Horowitz,BP 156, F-38042 Grenoble, France

[3] ESRF, Spline Spanish CRG Beanline, BP 220, F-38043 Grenoble, France

关键词: Electrosynthesis;    Inversion degree;    Mossbauer spectroscopy;    Nanoferrites;    Neutron diffraction;   

DOI  :  10.1016/j.jallcom.2017.12.342

来源: Elsevier

【 摘 要 】

The present work seeks to analyse the structural and magnetic properties of cobalt ferrite nanoparticles obtained by electrochemical synthesis by high-resolution transmission electronic microscopy (HRTEM), X-ray absorption spectroscopy (XAS), Mossbauer spectroscopy (MS), neutron diffraction (ND) and SQUID magnetometer. The cationic distribution is analyzed by different techniques. The inversion degree determined by the most accurate measurements was 0.73(1), and the formula for the nanoparticles therefore was (up arrow Co0.27Fe0.73)[down arrow Co0.73Fe1.27]O-4. The magnetic moment found from DC and Mossbauer spectroscopy measurements was 3.8(3) mu B, and the coercivity was 7870 Oe at 100 K. (c) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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