Molecular mechanics

Zeches, R.J, M.D Rossell, J.X Zhang, A.J Hatt, Q He, C.-H Yang, A Kumar, C.H Wang, A Melville, C Adamo, G Sheng, Y.-H Chu, J.F Ihlefeld, R Erni, C Ederer, V Gopalan, L.Q Chen, D.G Schldin, N.A Spaldin, L.W Martin, and Ramamoorthy Ramesh. "A strain-driven morphotropic phase boundary in bifeO3." Science 326 (2009) 977–980.