M. Wakeshima and Y. Hinatsu, Magnetic properties and structural transitions of orthorhombic fluoriterelated compounds Ln3MO7 (Ln=rare earths, M=transition metals), Journal of Solid State Chemistry, vol.183, pp.2681-2688, 2010.

J. F. Vente, R. B. Helmholdt, and D. J. Ijdo, The Structure and Magnetic Properties of Pr3MO7 with M = Nb, Ta, and Sb, vol.108, pp.18-23, 1994.

Y. Doi, Y. Harada, and Y. Hinatsu, Crystal structures and magnetic properties of fluorite-related oxides Ln3NbO7 (Ln=lanthanides), Journal of Solid State Chemistry, vol.182, pp.709-715, 2009.

L. Cai and J. C. Nino, Phase formation and dielectric properties of Ln2(Ln?0.5Nb0.5)2O7 (Ln=rare earth element), Journal of the European Ceramic Society, vol.30, pp.307-313, 2010.

L. Cai, J. C. Nino-;-ln=nd, . Gd, E. Dy, and Y. , Structure and dielectric properties of Ln3NbO7, vol.27, pp.3971-3976, 2007.

R. Abe, M. Higashi, K. Sayama, Y. Abe, H. Sugihara-;-r-=-y et al., Photocatalytic Activity of R3MO7 and R 2 Ti 2 O 7, J. Phys. Chem. B, vol.110, pp.2219-2226, 2006.

J. Zhao, Q. He, B. Yao, Q. Zhang, T. Zhang et al., Hydrothermal synthesis of Y3NbO7 nanowires for the photocatalytic degradation of omeprazole sodium, Ceramics International, vol.41, pp.7669-7676, 2015.

H. Yamamura, Electrical conductivity of the systems (YM)3NbO7 (M=Ca, Mg) and Y3NbMO7 (M=Zr and Ce), vol.123, pp.279-285, 1999.

D. Marrocchelli, P. A. Madden, S. T. Norberg, and S. Hull, Cation composition effects on oxide conductivity in the Zr2Y2O7-Y3NbO7 system, Journal of Physics: Condensed Matter, vol.21, p.405403, 2009.

S. T. Norberg, I. Ahmed, S. Hull, D. Marrocchelli, and P. A. Madden, Local structure and ionic conductivity in the Zr2Y2O7-Y3NbO7 system, J. Phys.: Condens. Matter, vol.21, p.215401, 2009.

A. Chesnaud, M. Braida, S. Estradé, F. Peiró, A. Tarancón et al., Hightemperature anion and proton conduction in RE3NbO7, Journal of the European Ceramic Society, vol.35, pp.3051-3061, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01180113

L. López-conesa, J. M. Rebled, M. H. Chambrier, K. Boulahya, J. M. González-calbet et al., ) for Proton Conduction Applications ?, Local Structure of Rare Earth Niobates, vol.13, pp.29-33, 2013.

K. Kim, A. Durand, J. Heintz, A. Veillere, and V. Jubera, Spectral evolution of Eu3+ doped Y3NbO7 niobate induced by temperature, Journal of Solid State Chemistry, vol.235, pp.169-174, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01253808

K. Kim, U. Chung, B. Mutulet, F. Weill, A. Demourgues et al., Tailoring the Composition of Eu3+ -Doped Y3NbO7 Niobate: Structural Features and Luminescent Properties Induced by Spark Plasma Sintering, vol.56, pp.4495-4503, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01520638

J. G. Allpress and H. J. Rossell, Fluorite-related phases Ln3MO7, Ln= rare earth, Y, or Sc, M= Nb, Sb, or Ta. I. Crystal chemistry, Journal of Solid State Chemistry, vol.27, pp.105-114, 1979.

H. J. Rossell-;-y-or-sc, M. Nb, . Sb, and . Ta, Fluorite-related phases Ln3MO7, Ln = rare earth, vol.27, pp.90150-90156, 1979.

W. W. Barker, The systems Y2O3-Nb2O5 and Ho2O3-Nb2O5: the cubic solid-solution region, Journal of Materials Science Letters, vol.3, pp.492-494, 1984.

K. P. Siqueira, J. C. Soares, E. Granado, E. M. Bittar, A. M. De-paula et al., Synchrotron X-ray diffraction and Raman spectroscopy of Ln3NbO7, Journal of Solid State Chemistry, vol.209, pp.63-68, 2014.

M. A. Subramanian, G. Aravamudan, and G. V. Subba-rao, Oxide pyrochlores -A review, Progress in Solid State Chemistry, vol.15, issue.83, pp.90001-90009, 1983.

A. Ikesue, T. Kinoshita, K. Kamata, and K. Yoshida, Fabrication and Optical Properties of High-Performance Polycrystalline Nd:YAG Ceramics for Solid-State Lasers, Journal of the American Ceramic Society, vol.78, pp.1033-1040, 1995.

L. An, A. Ito, and T. Goto, Fabrication of transparent Lu3NbO7 by spark plasma sintering, Materials Letters, vol.65, pp.3167-3169, 2011.

L. An, A. Ito, and T. Goto, Transparent Lu3NbO7 bodies prepared by reactive spark plasma sintering and their optical and mechanical properties, Ceramics International, vol.39, pp.383-387, 2013.

H. Kominami, M. Inoue, and T. Inui, Formation of niobium double oxides by the glycothermal method, Catalysis Today, vol.16, pp.309-317, 1993.

T. Okubo and M. Kakihana, Low temperature synthesis of Y3NbO7 by polymerizable complex method: Utilization of a methanol-citric acid solution of NbCl5 as a novel niobium

R. D. Shannon, Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides, Acta Cryst A, vol.32, pp.751-767, 1976.

C. Marlot, E. Barraud, S. L. Gallet, M. Eichhorn, and F. Bernard, Synthesis of YAG nanopowder by the coprecipitation method: Influence of pH and study of the reaction mechanisms, Journal of Solid State Chemistry, vol.191, pp.114-120, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00761277

P. Palmero and R. Traverso, Co-Precipitation of YAG Powders for Transparent Materials: Effect of the Synthesis Parameters on Processing and Microstructure, Materials, vol.7, pp.7145-7156, 2014.

R. Miida, F. Sato, M. Tanaka, H. Naito, and H. Arashi, Locally Modulated Structures of Fluorite-Related Y2O3-Nb2O5 Solid Solutions, Journal of Applied Crystallography, vol.30, pp.272-279, 1997.

J. Lee, M. Yashima, M. Kakihana, and M. Yoshimura, Phase Diagram and Oxygen-Ion Conductivity in the Y2O3-Nb2O5 System, Journal of the American Ceramic Society, vol.81, pp.894-900, 1998.

K. Y. Kim, A. Veillere, U. Chung, V. Jubera, and J. Heintz, Spark plasma sintering and decomposition of the Y3NbO7:Eu phase, J Mater Sci, vol.53, pp.1731-1742, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01636623

L. Wang, H. Kou, Y. Zeng, J. Li, Y. Pan et al., The effect of precipitant concentration on the formation procedure of yttrium aluminum garnet (YAG) phase, Ceramics International, vol.38, pp.3763-3771, 2012.

M. N. Rahaman, Ceramic processing and sintering, Ceramic Processing and Sintering, pp.585-603, 2003.

R. J. Brook, Treatise on materials science and technology, vol.9, pp.331-364, 1976.