V. Barrón, J. Torrent, and E. De-grave, Hydromaghemite, an intermediate in the hydrothermal transformation of 2-line ferrihydrite into hematite, American Mineralogist, vol.88, issue.11-12, pp.1679-1688, 2003.
DOI : 10.2138/am-2003-11-1207

T. S. Berquó, S. K. Banerjee, R. G. Ford, R. L. Penn, and T. Pichler, High crystallinity Si-ferrihydrite: An insight into its N??el temperature and size dependence of magnetic properties, Journal of Geophysical Research, vol.105, issue.3, pp.210210-1029, 2007.
DOI : 10.1029/2006JB004583

S. Brice-profeta, M. Arrio, E. Tronc, N. Menguy, I. 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

D. J. Burleson and R. L. Penn, Two-Step Growth of Goethite from Ferrihydrite, Langmuir, vol.22, issue.1, pp.402-40910, 2006.
DOI : 10.1021/la051883g

D. Carta, A. Casula, A. Corrias, A. Falqui, G. Navarra et al., Structural and magnetic characterization of synthetic ferrihydrite nanoparticles, Materials Chemistry and Physics, vol.113, issue.1, pp.349-355, 2009.
DOI : 10.1016/j.matchemphys.2008.07.122

C. Carvallo, P. Sainctavit, M. Arrio, N. Menguy, Y. Wang et al., Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study, Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study, pp.880-885, 2008.
DOI : 10.2138/am.2008.2713

URL : https://hal.archives-ouvertes.fr/hal-00643518

C. Carvallo, P. Sainctavit, M. Arrio, Y. Guyodo, R. L. Penn et al., Self-reversal of magnetization in oceanic submarine basalts studied with XMCD, Geophysical Research Letters, vol.61, issue.11, p.1130610, 1029.
DOI : 10.1029/2010GL043390

URL : https://hal.archives-ouvertes.fr/hal-00643532

V. S. Coker, A. G. Gault, C. I. Pearce, G. Van-der-laan, N. D. Telling et al., XAS and XMCD Evidence for Species-Dependent Partitioning of Arsenic During Microbial Reduction of Ferrihydrite to Magnetite, Environmental Science & Technology, vol.40, issue.24, pp.7745-775010, 2006.
DOI : 10.1021/es060990+

V. S. Coker, C. I. Pearce, C. Lang, G. Van-der-laan, R. A. Pattrick et al., Cation site occupancy of biogenic magnetite compared to polygenic ferrite spinels determined by X-ray magnetic circular dichroism, European Journal of Mineralogy, vol.19, issue.5, pp.707-71610, 2007.
DOI : 10.1127/0935-1221/2007/0019-1758

R. M. Cornell and U. Schwertmann, The Iron Oxides: Structure, Properties, Reactions, Occurrences and Uses, 2003.
DOI : 10.1002/3527602097

I. David and A. J. Welch, The oxidation of magnetite and related spinels. Constitution of gamma ferric oxide, Transactions of the Faraday Society, vol.52, pp.1642-165010, 1956.
DOI : 10.1039/tf9565201642

F. M. De-groot and A. Kotani, Core Level Spectroscopy of Solids, Adv. Condens. Matter Sci, vol.6, 2008.
DOI : 10.1201/9781420008425

J. L. Dormann, D. Fiorani, and E. Tronc, Magnetic Relaxation in Fine-Particle Systems, Adv. Chem. Phys, vol.98, pp.283-494, 1997.
DOI : 10.1002/9780470141571.ch4

V. A. Drits, B. A. Sakharov, A. L. Salyn, and A. Manceau, Structural Model for Ferrihydrite, Clay Minerals, vol.28, issue.2, pp.185-207, 1993.
DOI : 10.1180/claymin.1993.028.2.02

R. A. Eggleton and R. W. Fitzpatrick, New Data and a Revised Structural Model for Ferrihydrite, Clays and Clay Minerals, vol.36, issue.2, pp.111-124, 1988.
DOI : 10.1346/CCMN.1988.0360203

J. J. Erbs, R. L. Gilbert, and . Penn, Influence of Size on Reductive Dissolution of Six-Line Ferrihydrite, The Journal of Physical Chemistry C, vol.112, issue.32, pp.127-1210, 2008.
DOI : 10.1021/jp801601h

C. Gilles, P. Bonville, H. Rackoto, J. M. Broto, K. K. Wong et al., Magnetic hysteresis and superantiferromagnetism in ferritin nanoparticles, Journal of Magnetism and Magnetic Materials, vol.241, issue.2-3, pp.430-44010, 2002.
DOI : 10.1016/S0304-8853(01)00461-9

URL : https://hal.archives-ouvertes.fr/hal-00015699

Y. Gossuin, P. Gillis, A. Hocq, Q. L. Vuong, and A. Roch, Magnetic resonance relaxation properties of superparamagnetic particles, Wiley Interdisciplinary Reviews: Nanomedicine and Nanobiotechnology, vol.48, issue.6, pp.299-310, 2009.
DOI : 10.1002/wnan.36

Y. Guyodo, A. Mostrom, R. L. Penn, and S. K. Banerjee, From Nanodots to Nanorods: Oriented aggregation and magnetic evolution of nanocrystalline goethite, Geophysical Research Letters, vol.16, issue.1, pp.151210-1029, 2003.
DOI : 10.1029/2003GL017021

Y. Guyodo, S. K. Banerjee, R. L. Penn, D. Burleson, T. S. Berquo et al., Magnetic properties of synthetic six-line ferrihydrite nanoparticles, Physics of the Earth and Planetary Interiors, vol.154, issue.3-4, pp.222-233, 2006.
DOI : 10.1016/j.pepi.2005.05.009

R. Harrington, D. B. Hausner, W. Xu, N. Bhandari, F. M. Michel et al., Neutron Pair Distribution Function Study of Two-Line Ferrihydrite, Environmental Science & Technology, vol.45, issue.23, pp.9883-989010, 1021.
DOI : 10.1021/es2020633

M. F. Hochella, S. K. Jr, P. A. Lower, R. L. Maurice, N. Penn et al., Nanominerals, Mineral Nanoparticles, and Earth Systems, Nanominerals , mineral nanoparticles, and Earth systems, pp.1631-1635, 2008.
DOI : 10.1126/science.1141134

C. P. Hunt, B. M. Moskowitz, and S. K. Banerjee, Magnetic properties of rocks and minerals, AGU Ref. Shelf, vol.46, pp.189-20410, 1029.
DOI : 10.1029/RF003p0189

J. L. Jambor and J. E. Dutrizac, Occurrence and Constitution of Natural and Synthetic Ferrihydrite, a Widespread Iron Oxyhydroxide, Chemical Reviews, vol.98, issue.7, pp.2549-258610, 1998.
DOI : 10.1021/cr970105t

D. E. Janney, J. M. Cowley, and P. R. Buseck, Structure of synthetic 2-line ferrihydrite by electron nanodiffraction, American Mineralogist, vol.85, issue.9, pp.1180-1187, 2000.
DOI : 10.2138/am-2000-8-910

D. E. Janney, J. M. Cowley, and P. R. Buseck, Structure of synthetic 6-line ferrihydrite by electron nanodiffraction, American Mineralogist, vol.86, issue.3, pp.327-335, 2001.
DOI : 10.2138/am-2001-2-316

E. Jansen, A. Kyek, W. Schäfer, and U. Schwertmann, The structure of six-line ferrihydrite, Applied Physics A: Materials Science & Processing, vol.74, issue.0, pp.1004-100610, 2002.
DOI : 10.1007/s003390101175

A. Lewin, G. R. Moore, and N. E. Le-brun, Formation of protein-coated iron minerals, Dalton Transactions, vol.4, issue.22, pp.3597-361010, 2005.
DOI : 10.1039/b506071k

A. Manceau, Evaluation of the structural model for ferrihydrite derived from real-space modeling of high-energy X-ray diffraction data, Clay Miner, pp.19-34, 2009.

A. Manceau and V. A. Drits, Local Structure of Ferrihydrite and Feroxyhite by EXAFS Spectroscopy, Clay Minerals, vol.28, issue.2, pp.165-184, 1993.
DOI : 10.1180/claymin.1993.028.2.01

F. M. Michel, L. Ehm, S. M. Antao, R. L. Penn, P. J. Chupas et al., The structure of ferrihydrite, a nanocrystalline material, Science, pp.316-1726, 2007.

R. N. Muller, L. Vander-elst, A. Roch, J. A. Peters, E. Csajbok et al., RELAXATION BY METAL-CONTAINING NANOSYSTEMS, Adv. Inorg. Chem, vol.57, issue.05, pp.239-29210, 2005.
DOI : 10.1016/S0898-8838(05)57005-3

E. Murad, The M??ssbauer spectrum of ???well???-crystallized ferrihydrite, Journal of Magnetism and Magnetic Materials, vol.74, issue.2, pp.153-15710, 1988.
DOI : 10.1016/0304-8853(88)90062-5

C. I. Pearce, C. M. Henderson, R. A. Pattrick, G. Van-der-laan, and D. J. Vaughan, Direct determination of cation site occupancies in natural ferrite spinels by L2,3 X-ray absorption spectroscopy and X-ray magnetic circular dichroism, American Mineralogist, vol.91, issue.5-6, pp.880-893, 2006.
DOI : 10.2138/am.2006.2048

R. L. Penn, K. Tanaka, and J. J. Erbs, Size dependent kinetics of oriented aggregation, Journal of Crystal Growth, vol.309, issue.1, pp.97-102, 2007.
DOI : 10.1016/j.jcrysgro.2007.09.011

D. G. Rancourt and J. F. Meunier, Constraints on structural models of ferrihydrite as a nanocrystalline material, American Mineralogist, vol.93, issue.8-9, pp.1412-1417, 2008.
DOI : 10.2138/am.2008.2782

D. G. Rancourt, D. Fortin, T. Pichler, P. Thibault, G. Lamarche et al., Mineralogy of a natural As-rich hydrous ferric oxide coprecipitate formed by mixing of hydrothermal fluid and seawater: Implications regarding surface complexation and color banding in ferrihydrite deposits, American Mineralogist, vol.86, issue.7-8, pp.834-851, 2001.
DOI : 10.2138/am-2001-0707

P. Sainctavit, C. Cartier-dit-moulin, and M. Arrio, Magnetic measurements at the atomic scale in molecular magnetic and paramagnetic compounds, Magnetism: Molecules to Materials I, pp.131-153, 2003.

U. Schwertmann, L. Carlson, and E. Murad, Properties of Iron Oxides in Two Finnish Lakes in Relation to the Environment of Their Formation, Clays and Clay Minerals, vol.35, issue.4, pp.297-304, 1987.
DOI : 10.1346/CCMN.1987.0350407

M. Sikora, A. Juhin, T. Weng, P. Sainctavit, C. Detlefs et al., -edge Magnetic Circular Dichroism Observed in Photon-in???Photon-out Spectroscopy, Physical Review Letters, vol.105, issue.3, pp.37202-37203, 2010.
DOI : 10.1103/PhysRevLett.105.037202

URL : https://hal.archives-ouvertes.fr/ujm-00356331

B. T. Thole, G. Van-der-laan, J. C. Fuggle, G. A. Sawatzky, R. C. Karnatak et al., multiplets of the lanthanides, 3d x-ray-absorption lines and the 3d 9 4f n+1 multiplets of the lanthanides, pp.5107-5118, 1985.
DOI : 10.1103/PhysRevB.32.5107

L. Vayssières, C. Chaneac, E. Tronc, and J. P. Jolivet, Size Tailoring of Magnetite Particles Formed by Aqueous Precipitation: An Example of Thermodynamic Stability of Nanometric Oxide Particles, Journal of Colloid and Interface Science, vol.205, issue.2, pp.205-212, 1998.
DOI : 10.1006/jcis.1998.5614

Y. Wang, G. Morin, G. Ona-nguema, N. Menguy, F. Juillot et al., Arsenite sorption at the magnetite???water interface during aqueous precipitation of magnetite: EXAFS evidence for a new arsenite surface complex, Geochimica et Cosmochimica Acta, vol.72, issue.11, pp.2573-2586, 2008.
DOI : 10.1016/j.gca.2008.03.011

J. Zhao, F. E. Huggins, Z. Feng, and G. P. Huffman, Ferrihydrite: Surface structure and its effects on phase transformation, Clays Clay Miner, vol.42, pp.737-74610, 1994.