“…Ferroelasticity is similar to ferromagnetism or ferroelectricity characterized by strain–stress hysteresis loop. − Ferroelasticity refers to the nonlinear shape response due to mechanical forces. Because of this, ferroelastic materials can be widely used in mechanical switches, signal conversion, memory materials, and other fields. − Since Salje et al first observed the elastic hysteresis loop on Pb 3 (PO 4 ) 2 in 1976, , a large number of pure inorganic ferroelastic materials (such as Li 2 SrNb 2 O 7 , KFe(MoO 4 ) 2 , and BiVO 4 ) have gradually come into view in recent years. However, the main drawback of these inorganic ferroelastic materials lies in their manufacturing difficulties, high cost, and large energy consumption .…”