Author:
Flores-Martinez Nancy,Franceschin Giulia,Gaudisson Thomas,Haj-Khlifa Sonia,Derouich Sarra Gam,Yaacoub Nader,Grenèche Jean-Marc,Menguy Nicolas,Valenzuela Raul,Ammar Souad
Abstract
AbstractHetero-nanostructures based on magnetic contrast oxides have been prepared as highly dense nanoconsolidates. Cobalt ferrite-cobalt oxide core-shell type nanoparticles (NPs) were synthesized by seed mediated growth in polyol and subsequently consolidated by Spark Plasma Sintering (SPS) at 500 °C for a few minutes while applying a uniaxial pressure of 100 MPa. It is interesting to note that the exchange bias feature observed in the core-shell NPs is reproduced in their ceramic counterparts, or even attenuated. A systematic structural characterization was then carried out to elucidate the decrease in the exchange magnetic field, involving mainly advanced X-ray diffraction, zero-field and in-field 57Fe Mössbauer spectrometry, magnetic measurements and electron microscopy.
Funder
Agence Nationale de la Recherche, France
Agence Nationale de la Recherche
Publisher
Springer Science and Business Media LLC
Reference49 articles.
1. Nogués, J. et al. Exchange bias in nanostructures. Phys. Rep. 422, 65 (2005).
2. Pan, L., Soh, W. T., Phuoc, N. N. & Ong, C. K. Non-resonant and Resonant Spin Rectification in the Exchange Biased NiFe/MnIr Bilayer. Phys. Status Sol.: Rapid Res. Lett. 12, 1800178 (2018).
3. O’Grady, K., Fernandez-Outon, L. E. & Vallejo-Fernandez, G. A new paradigm for exchange bias in poly-crystalline thin films. J. Magn. Magn. Mater. 322, 883 (2010).
4. Mallick, K. & Kumar, P. S. A. Crystallite size dependent exchange bias in MgFe2O4 thin films on Si(100). J. Appl. Phys. 124, 053901 (2018).
5. Huang, J., Gellatly, A., Kauffmann, A., Sun, X. & Wang, H. Exchange Bias Effect along Vertical Interfaces in La0.7Sr0.3MnO3:NiO Vertically Aligned Nanocomposite Thin Films Integrated on Silicon Substrates. Cryst. Grow. Design, 18, 4388 (2018).
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献