H. Sun and H. Zeng, Size-Controlled Synthesis of Magnetite Nanoparticles, Journal of the American Chemical Society, vol.124, issue.28, pp.8204-8205, 2002.
DOI : 10.1021/ja026501x

. Okaniwa, Synthesis of poly(tetrafluoroethylene)/poly(butadiene) core-shell particles and their graft copolymerization, Journal of Applied Polymer Science, vol.68, issue.2, pp.185-190, 1998.
DOI : 10.1002/(SICI)1097-4628(19980411)68:2<185::AID-APP2>3.0.CO;2-M

S. Hota, K. C. Jain, and . Khilar, Synthesis of CdS???Ag2S core-shell/composite nanoparticles using AOT/n-heptane/water microemulsions, Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol.232, issue.2-3, pp.119-127, 2004.
DOI : 10.1016/j.colsurfa.2003.10.021

N. A. Srivastava and . Kotov, Composite Layer-by-Layer (LBL) Assembly with Inorganic Nanoparticles and Nanowires, Accounts of Chemical Research, vol.41, issue.12, pp.1831-1841, 2008.
DOI : 10.1021/ar8001377

S. Lee, N. Lee, J. Park, B. H. Kim, Y. W. Yi et al., Ni/NiO Core/Shell Nanoparticles for Selective Binding and Magnetic Separation of Histidine-Tagged Proteins, Journal of the American Chemical Society, vol.128, issue.33, pp.10658-10659, 2006.
DOI : 10.1021/ja063177n

H. Lee, J. T. Jiang, J. S. Choi, S. H. Moon, S. H. Noh et al., Exchange-coupled magnetic nanoparticles for efficient heat induction, Nature Nanotechnology, vol.49, issue.7, pp.418-422, 2011.
DOI : 10.1038/nnano.2011.95

. J. Irvine, Drug delivery: One nanoparticle, one kill, Nature Materials, vol.177, issue.5, pp.342-343, 2011.
DOI : 10.1002/anie.201003445

S. Zeng and . Sun, Syntheses, Properties, and Potential Applications of Multicomponent Magnetic Nanoparticles, Advanced Functional Materials, vol.108, issue.3, pp.391-400, 2008.
DOI : 10.1002/adfm.200701211

J. Nogués, V. Sort, V. Langlais, S. Skumryev, J. S. Suriñach et al., Exchange bias in nanostructures, Physics Reports, vol.422, issue.3, pp.65-117, 2005.
DOI : 10.1016/j.physrep.2005.08.004

S. Skumryev, Y. Stoyanov, G. Zhang, D. Hadjipanayis, J. Givord et al., Beating the superparamagnetic limit with exchange bias, Nature, vol.423, issue.6942, pp.850-853, 2003.
DOI : 10.1038/nature01687

J. Zeng, Z. L. Li, J. P. Wang, S. H. Liu, and . Sun, Nanoparticles, Nano Letters, vol.4, issue.1, pp.187-190, 2004.
DOI : 10.1021/nl035004r

URL : https://hal.archives-ouvertes.fr/hal-00485654

T. J. Lee, R. Yoon, and . Weissleder, Ultrasensitive Detection of Bacteria Using Core-Shell Nanoparticles and an NMR-Filter System, Angewandte Chemie International Edition, vol.4, issue.31, pp.5657-5660, 2009.
DOI : 10.1002/anie.200901791

J. Yoon, H. Lee, H. Shao, and R. Weissleder, Highly Magnetic Core-Shell Nanoparticles with a Unique Magnetization Mechanism, Angewandte Chemie International Edition, vol.106, issue.20, pp.4663-4666, 2011.
DOI : 10.1002/anie.201100101

A. Barbic and . Scherer, Magnetic nanostructures as amplifiers of transverse fields in magnetic resonance, Solid State Nuclear Magnetic Resonance, vol.28, issue.2-4, pp.91-105, 2005.
DOI : 10.1016/j.ssnmr.2005.06.002

S. Lee, R. M. Anisur, K. W. Kim, W. S. Kim, T. J. Park et al., /MnO Hybrid Nanocrystals: Selective, Magnetically Recyclable Catalyst Systems, Chemistry of Materials, vol.24, issue.4, pp.682-687, 2012.
DOI : 10.1021/cm2027724

L. Krycka, J. A. Borchers, G. Salazar-alvarez, A. López-ortega, M. Estrader et al., Core|Shell Nanoparticles Using Anomalous Small-Angle X-ray Scattering, ACS Nano, vol.7, issue.2, pp.921-931, 2013.
DOI : 10.1021/nn303600e

M. López-ortega, G. Estrader, S. Salazar-alvarez, I. V. Estrade, R. K. Golosovsky et al., Strongly exchange coupled inverse ferrimagnetic soft/hard, MnxFe3???xO4/FexMn3???xO4, core/shell heterostructured nanoparticles, Nanoscale, vol.41, issue.16, pp.5138-5147, 2012.
DOI : 10.1039/c2nr30986f

M. T. Binns, D. Qureshi, S. H. Peddis, P. B. Baker, A. Howes et al., Exchange Bias in Fe@Cr Core???Shell Nanoparticles, Nano Letters, vol.13, issue.7, pp.3334-3339, 2013.
DOI : 10.1021/nl401587t

M. A. Brice-profeta, E. Arrio, N. Tronc, I. Menguy, C. Letard et al., Magnetic order in - nanoparticles: a XMCD study, Journal of Magnetism and Magnetic Materials, vol.288, pp.354-365, 2005.
DOI : 10.1016/j.jmmm.2004.09.120

URL : https://hal.archives-ouvertes.fr/hal-00112611

S. Coker, N. D. Telling, G. Van-der-laan, R. A. Pattrick, C. I. Pearce et al., Harnessing the Extracellular Bacterial Production of Nanoscale Cobalt Ferrite with Exploitable Magnetic Properties, ACS Nano, vol.3, issue.7, pp.1922-1928, 2009.
DOI : 10.1021/nn900293d

S. Coker, J. A. Bennett, N. D. Telling, T. Henkel, J. M. Charnock et al., Microbial Engineering of Nanoheterostructures: Biological Synthesis of a Magnetically Recoverable Palladium Nanocatalyst, ACS Nano, vol.4, issue.5, pp.2577-2584, 2010.
DOI : 10.1021/nn9017944

U. Glatzel and . Bergmann, High resolution 1s core hole X-ray spectroscopy in 3d transition metal complexes???electronic and structural information, Coordination Chemistry Reviews, vol.249, issue.1-2, pp.65-95, 2005.
DOI : 10.1016/j.ccr.2004.04.011

D. López-ortega, E. Tobia, I. V. Winkler, G. Golosovsky, S. Salazar-alvarez et al., Size-Dependent Passivation Shell and Magnetic Properties in Antiferromagnetic/Ferrimagnetic Core/Shell MnO Nanoparticles, Journal of the American Chemical Society, vol.132, issue.27, pp.9398-9407, 2010.
DOI : 10.1021/ja1021798

F. Wilke, P. E. Farges, G. E. Petit, F. Brown-jr, and . Martin, XANES spectroscopic study, American Mineralogist, vol.86, issue.5-6, pp.714-730, 2001.
DOI : 10.2138/am-2001-5-612

E. Westre, P. Kennepohl, J. G. Dewitt, B. Hedman, K. O. Hodgson et al., A Multiplet Analysis of Fe K-Edge 1s ??? 3d Pre-Edge Features of Iron Complexes, Journal of the American Chemical Society, vol.119, issue.27, pp.6297-6314, 1997.
DOI : 10.1021/ja964352a

S. Sakurai, M. Sasaki, H. Okube, T. Ohara, and . Toyoda, Cation distribution and valence state in Mn???Zn ferrite examined by synchrotron X-rays, Physica B: Condensed Matter, vol.403, issue.19-20, pp.3589-3595, 2008.
DOI : 10.1016/j.physb.2008.05.035

A. Arrio, S. Rossano, C. Brouder, L. Galoisy, and G. Calas, hybridization in the Ligand Field Multiplet model, Europhysics Letters (EPL), vol.51, issue.4, pp.454-460, 2000.
DOI : 10.1209/epl/i2000-00515-8

URL : https://hal.archives-ouvertes.fr/hal-00085666

). A. López-ortega, M. Estrader, G. Salazar-alvarez, A. G. Roca, J. Noguésb-)-r et al., Applications of exchange coupled bi-magnetic hard/so? and so?/hard magnetic core/shell nanoparticles, Phys. Rep. Phys. Rev. B: Condens. Matter Mater. Phys, vol.48, pp.15812-15816, 1993.

R. Pike, A. P. Roberts, and K. L. Verosub, Characterizing interactions in fine magnetic particle systems using first order reversal curves, Journal of Applied Physics, vol.85, issue.9, pp.6660-6667, 1999.
DOI : 10.1063/1.370176

K. Dumas, Y. Fang, B. J. Kirby, C. Zha, V. Bonanni et al., Probing vertically graded anisotropy in FePtCu films, Physical Review B, vol.84, issue.5, p.54434, 2011.
DOI : 10.1103/PhysRevB.84.054434

J. H. Park, N. M. Hwang, and T. Hyeon, Ultra-large-scale syntheses of monodisperse nanocrystals, Nature Materials, vol.126, issue.12, pp.891-895, 2004.
DOI : 10.1002/1521-3765(20020118)8:2<334::AID-CHEM334>3.3.CO;2-K

C. O. Handley, K. Matsumoto, F. Saito, T. Toyoda, K. Ohkubo et al., Modern Magnetic Materials:Principles and Applications, Jpn. J. Appl. Phys, vol.39, issue.61, pp.6089-6093, 1999.