The hydrothermal reaction of (L)-ethyl lactate (Lig-Et) with Tb(ClO(4))(3).6H(2)O gives colorless block (Lig)(2)Tb(H(2)O)(2)(ClO(4)) (1), in which 1 displays a laminar 2D framework. Ferroelectric and magnetic property measurements reveal that 1 probably is the first example of two "ferroic" metal-organic frameworks. Ferroelectricity of its analogue, (Lig)(2)Tb(D(2)O)(2)(ClO(4)) (2), further confirms the presence of the ferroelectric deuterium effect.