Nanoindentation of the a and c Domains in a Tetragonal BaTiO3 Single CrystalJournal of Applied Physics
AbstractNanoindentation in conjunction with piezoresponse force microscopy was used to study domain switching and to measure the mechanical properties of individual ferroelectric domains in a tetragonal BaTiO3 single crystal. It was found that nanoindentation has induced local domain switching; the a and c domains of BaTiO3 have different elastic moduli but similar hardness.Nanoindentationmodulus mapping on the a and c domains further confirmed such difference in elasticity. Finite element modeling was used to simulate the von Mises stress and plastic strain profiles of the indentations on both a and c domains, which introduces a much higher stress level than the critical value for domain nucleation.
Citation InformationYoung-Bae Park, Matthew J. Dicken, Zhi-Hui Xu and Xiaodong Li. "Nanoindentation of the a and c Domains in a Tetragonal BaTiO3 Single Crystal" Journal of Applied Physics Vol. 102 Iss. 8 (2007) p. #083507
Available at: http://works.bepress.com/xiaodong_li/135/