Lattice dynamics of PbTiO3

Super-Lattice Structure and Phase Evolution of Pb(Lu0.5Nb0.5)O3-PbTiO3 Single Crystal with Low PbTiO3

The phase diagram of the Pb(Lu0.5Nb0.5)O3-PbTiO3 (PLN-PT) binary system was previously reported based on XRD and dielectric measurements results. Unusually, the Curie temperature of PLN-PT with low PT obtained from the phase diagram is much lower than that of PLN and PT end members, which is different from others, such as PZT. Therefore, the complex structure of PLN-PT with low PT is desired to...

Lattice Dynamics of Tetracyanoethylene

Dynamics of lattice kinks

We consider a class of Hamiltonian nonlinear wave equations governing a field defined on a spatially discrete one dimensional lattice, with discreteness parameter, d = h, where h > 0 is the lattice spacing. The specific cases we consider in detail are the discrete sine-Gordon (SG) and discrete φ models. For finite d and in the continuum limit (d → ∞) these equations have static kink-like (heter...

Birefringence of lead titanate (PbTiO3)

Since lead titanate was ®rst grown in single-crystal form in the 1930s, several independent reports of its linear birefringence have been published. Whilst there is overall qualitative agreement on its behaviour with temperature, the absolute values show some degree of variation. At 298 K they range from ÿ0.009 to ÿ0.013, a relative spread of 40%, whilst at 673 K the discrepancy is even greater...

An & srmonic & lattice Dynamics

'A. H. Wilson, Theory ofMetals, 2nd ed. (Cambridge U. P., Cambridge, England, 1953). "I.Nebenzahl and M. Weger, Philos. Mag. 24, 1119(1971). 2'C. Herring, Phys. Rev. 96, 1163 (1954). C. Herring, Semiconductors and Phosphors, edited by M. Schon and H. Welker (Vieweg, Braunschweig, Germany, 1958), p. 184. "P. Eklund (private communication). "H. Van Cong and G. Mesnard, Phys. Status Solidi 8 50, 5...