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It is a ceramic material which was used in 2010 experiments on a new theory on baryon asymmetry.
References
Janes, D. L.; Bodnar, R. E.; Taylor, A. L. (1978). "Europium barium titanate---A magnetic ferroelectric compound". Journal of Applied Physics. 49 (3): 1452. Bibcode:1978JAP....49.1452J. doi:10.1063/1.324974.