T. R. Shrout and S. J. Zhang, Lead-Free Piezoelectric Ceramics: Alternatives for PZT?, J. Electroceramics, vol.19, pp.111-124, 2007.

S. Zhang, R. Xia, and T. R. Shrout, Lead-Free Piezoelectric Ceramics vs. PZT?, J. Electroceramics, vol.19, pp.251-257, 2007.

J. Rödel, W. Jo, K. T. Seifert, E. M. Anton, T. Granzow et al., Perspective on the Development of Lead-Free Piezoceramics, J. Am. Ceram. Soc, vol.92, pp.1153-1177, 2009.

M. Prakasam, P. Veber, O. Viraphong, L. Etienne, M. Lahaye et al., Growth and Characterizations of Lead-Free Ferroelectric KNN-Based Crystals, Comptes Rendus Phys, vol.14, pp.133-140, 2013.

D. S. Keeble, F. Benabdallah, P. A. Thomas, M. Maglione, and J. Kreisel, Revised Structural Phase Diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3), Appl. Phys. Lett, p.92903, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00808560

M. Acosta, N. Novak, V. Rojas, S. Patel, R. Vaish et al., BaTiO3-Based Piezoelectrics: Fundamentals, Current Status, and Perspectives, Appl. Phys. Rev, 2017.

Y. Saito, H. Takao, T. Tani, T. Nonoyama, K. Takatori et al., Lead-Free Piezoceramics, Nature, vol.432, pp.84-87, 2004.

H. Liu, J. Koruza, P. Veber, D. Rytz, M. Maglione et al., Orientation-Dependent Electromechanical Properties of Mn-Doped (Li,Na,K)(Nb,Ta)O3 Single Crystals, Appl. Phys. Lett, p.152902, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01388329

H. Liu, P. Veber, J. Rödel, D. Rytz, P. B. Fabritchnyi et al., High-Performance Piezoelectric (K,Na,Li)(Nb,Ta,Sb)O3 Single Crystals by Oxygen Annealing, Acta Mater, vol.148, pp.499-507, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01731050

W. Liu and X. Ren, Large Piezoelectric Effect in Pb-Free Ceramics, Phys. Rev. Lett, p.257602, 2009.

Y. Nahas, A. Akbarzadeh, S. Prokhorenko, S. Prosandeev, R. Walter et al., Microscopic Origins of the Large Piezoelectricity of Lead-free, Nat. Commun, vol.8, p.1, 2017.

F. Benabdallah, P. Veber, M. Prakasam, O. Viraphong, K. Shimamura et al., Continuous Cross-over from Ferroelectric to Relaxor State and Piezoelectric Properties of BaTiO3-BaZrO3-CaTiO3 Single Crystals, J. Appl. Phys, p.144102, 2014.
URL : https://hal.archives-ouvertes.fr/hal-00986064

P. Veber, F. Benabdallah, H. Liu, G. Buse, M. Josse et al., Growth and Characterization of Lead-Free Piezoelectric Single Crystals. Materials (Basel), vol.8, pp.7962-7978, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01358643

, ANSI/IEEE Std 176-1987. An American National Standard IEEE-Standard on Piezoelectricity. The Institute of Electrical and Electronics Engineers, 1988.

V. Pet?í?ek, M. Du?ek, and L. Palatinus, Crystallographic Computing System JANA2006: General Features, Zeitschrift für Krist, vol.229, pp.345-352, 2014.

, BaTiO3 Crystal Structure, Lattice Parameters, Ternary Compounds

O. Madelung, U. Rössler, and M. Schulz, , pp.1-6, 2000.

R. M. Glaister and H. F. Kay, An Investigation of the Cubic-Hexagonal Transition in Barium Titanate, Proc. Phys. Soc, vol.76, pp.763-771, 1960.

J. A. Basmajian and R. C. Devries, Phase Equilibria in the System BaTiO3-SrTiO3, J. Am. Ceram. Soc, vol.40, pp.373-376, 1957.

M. Ceh, D. Kolar, and L. Golic, The Phase Diagram of CaTiO3-SrTiO3, J. Solid State Chem, vol.68, pp.68-72, 1987.

S. A. Redfern, High-Temperature Structural Phase Transitions in Perovskite (CaTiO3)

, J. Phys. Condens. Matter, vol.8, pp.8267-8275, 1996.

M. Guennou, P. Bouvier, B. Krikler, J. Kreisel, R. Haumont et al., HighPressure Investigation of CaTiO3 up to 60 GPa Using x-Ray Diffraction and Raman Spectroscopy, Phys. Rev. B -Condens. Matter Mater. Phys, vol.82, pp.1-10, 2010.
URL : https://hal.archives-ouvertes.fr/hal-01067368

Y. J. Jiang, R. Y. Guo, and . Bhalla, Growth and Properties of CaTiO3 Single Crystal Fibers, J. Electroceramics, vol.2, pp.199-203, 1998.

Y. Yamashita and N. Ichinose, Can Relaxor Piezoelectric Materials Outperform PZT?(Review), Proceedings of the Tenth IEEE International Symposium on, pp.71-78, 1996.

R. C. Devries and R. Roy, Phase Equilibria in the System BaTiO3-CaTiO3, J. Am. Soc, vol.38, pp.158-171, 1955.

J. J. Halvorson and R. T. Wimber, Thermal Expansion of Iridium at High Temperatures, J. Appl. Crystallogr, p.2519, 1972.

Y. He, Heat Capacity , Thermal Conductivity , and Thermal Expansion of Barium TitanateBased Ceramics, Thermochim. Acta, vol.419, pp.135-141, 2004.

D. Schwabe, R. Uecker, M. Bernhagen, and Z. Galazka, An Analysis of and a Model for Spiral Growth of Czochralski-Grown Oxide Crystals with High Melting Point, J. Cryst. Growth, vol.335, pp.138-147, 2011.

C. Guguschev, D. J. Kok, Z. Galazka, D. Klimm, R. Uecker et al., Influence of Oxygen Partial Pressure on SrTiO3 Bulk Crystal Growth from Non-Stoichiometric Melts, CrystEngComm, vol.17, pp.3224-3234, 2015.

K. A. Jackson, Kinetics Processes: Crystal Growth, Diffusion, and Phase Transitions in Materials, 2004.

I. Levin, T. G. Amos, S. M. Bell, L. Farber, T. A. Vanderah et al., Phase Equilibria, Crystal Structures, and Dielectric Anomaly in the BaZrO3-CaZrO3 System, J. Solid State Chem, vol.175, pp.170-181, 2003.

F. Benabdallah, A. Simon, H. Khemakhem, C. Elissalde, and M. Maglione, Linking Large Piezoelectric Coefficients to Highly Flexible Polarization of Lead Free BaTiO3-CaTiO3-BaZrO3 Ceramics, J. Appl. Phys, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00618396

J. Ravez, C. Broustera, and A. Simon, Lead-Free Ferroelectric Relaxor Ceramics in the BaTiO3-BaZrO3-CaTiO3 System, J. Mater. Chem, vol.9, pp.1609-1613, 1999.

A. Simon, J. Ravez, and M. Maglione, Relaxor Properties of Ba0.9Bi0.067(Ti1?xZrx)O3 Ceramics, Solid State Sci, vol.7, pp.925-930, 2005.
URL : https://hal.archives-ouvertes.fr/hal-00015537

Y. Zeng, Y. Zheng, X. Tu, Z. Lu, and E. Shi, Growth and Characterization of Lead-Free Ba(1?x)CaxTi(1?y)ZryO3 Single Crystal, J. Cryst. Growth, vol.343, pp.17-20, 2012.

Y. Tian, L. Wei, X. Chao, Z. Liu, and Z. Yang, Phase Transition Behavior and Large Piezoelectricity Near the Morphotropic Phase Boundary of Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics, J. Am. Ceram. Soc, vol.96, pp.496-502, 2013.

H. Bao, C. Zhou, D. Xue, J. Gao, and X. Ren, A Modified Lead-Free Piezoelectric BZT-x BCT System with Higher T C, J. Phys. D. Appl. Phys, p.465401, 2010.

W. Li, Z. Xu, R. Chu, P. Fu, and G. Zang, Piezoelectric and Dielectric Properties of (Ba1-xCax)(Ti0.95Zr0.05)O3 Lead-Free Ceramics, J. Am. Ceram. Soc, vol.93, pp.2942-2944, 2010.

V. Buscaglia, S. Tripathi, V. Petkov, M. Dapiaggi, M. Deluca et al., Average and Local Atomic-Scale Structure in BaZrxTi1-xO3 (x = 0.10, 0.20, 0.40) Ceramics by High-Energy x-Ray Diffraction and Raman Spectroscopy, J. Phys. Condens. Matter, vol.26, p.65901, 2014.

Y. Sun, D. Liu, Q. Li, J. Shim, W. He et al., Zr,Ti)O3 Single Crystal and Its Fine-Domain Structure, ACS Appl

. Mater, , vol.10, pp.12847-12853, 2018.

D. Liu, J. Shim, Y. Sun, Q. Li, and Q. Yan, Growth of Ca, Zr Co-Doped BaTiO3 Lead-Free Ferroelectric Single Crystal and Its Room-Temperature Piezoelectricity, AIP Adv, vol.7, p.95311, 2017.

L. Zhu, B. Zhang, L. Zhao, S. Li, Y. Zhou et al., Large Piezoelectric Effect of (Ba,Ca)TiO3-xBa(Sn,Ti)O3 Lead-Free Ceramics, J. Eur. Ceram. Soc, vol.36, pp.1017-1024, 2016.

Y. Yang, Y. Zhou, J. Ren, Q. Zheng, K. H. Lam et al., Phase Coexistence and Large Piezoelectricity in BaTiO3-CaSnO3 Lead-Free Ceramics, J. Am. Ceram. Soc, vol.101, pp.2594-2605, 2018.

J. Yang, F. Zhang, Q. Yang, Z. Liu, Y. Li et al., Large Piezoelectric Properties in KNN-Based Lead-Free Single Crystals Grown by a Seed-Free Solid-State Crystal Growth Method, Appl. Phys. Lett, p.182904, 2016.

D. Damjanovic and . Morphotropic, Phase Boundary System Based on Polarization Rotation and Polarization Extension, Appl. Phys. Lett, p.62906, 2010.

H. Tian, X. Meng, C. Hu, P. Tan, X. Cao et al., Origin of Giant Piezoelectric Effect in Lead-Free K1?xNaxTa1?yNbyO3 Single Crystals, Sci. Rep, 2016.

H. Liu, P. Veber, A. Zintler, L. Molina-luna, D. Rytz et al., Temperature-Dependent Evolution of Crystallographic and Domain Structures in (K,Na,Li)(Ta,Nb)O3 Piezoelectric Single Crystals, IEEE Trans. Ultrason. Ferroelectr. Freq. Control, vol.65, pp.1508-1516, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01880722

R. Imura, Y. Kitanaka, T. Oguchi, Y. Noguchi, and M. Miyayama, Polarization Properties and Crystal Structures of Ferroelectric (Ba,Ca)TiO3 Single Crystals, J. Adv. Dielectr, 2014.

I. Levin, V. Krayzman, and J. C. Woicik, Local-Structure Origins of the Sustained Curie Temperature in (Ba,Ca)TiO3 Ferroelectrics, Appl. Phys. Lett, vol.102, pp.1-6, 2013.

D. Fu, M. Itoh, and S. Koshihara, Crystal Growth and Piezoelectricity of BaTiO3-CaTiO3 Solid Solution, Appl. Phys. Lett, p.12904, 2008.

D. Fu, M. Itoh, S. Koshihara, T. Kosugi, and S. Tsuneyuki, Anomalous Phase Diagram of Ferroelectric (Ba,Ca)TiO3 Single Crystals with Giant Electromechanical Response, Phys. Rev. Lett, p.227601, 2008.

T. Mitsui and W. B. Westphal, Dielectric and X-Rays Studies of CaxBa1-xTiO3 and CaxSr1-xTiO3, Phys. Rev, vol.124, pp.1354-1359, 1961.

O. Bidault, C. Perrin, C. Caranoni, and N. Menguy, Chemical Order Influence on the Phase Transition in the Relaxor Pb(Sc1/2Nb1/2)O3, J. Appl. Phys, vol.90, pp.4115-4121, 2001.

F. Chu, N. Setter, and A. K. Tagantsev, The Spontaneous Relaxor-Ferroelectric Transition of Pb(Sc0.5Ta0.5)O3, J. Appl. Phys, vol.74, pp.5129-5134, 1993.