Experimental and theoretical study of the influence of disorder on diffuse first-order phase transitions: NaNbO3: Gd and KTaO3: Li as examples

Autor: Prosandeeva, M. S., Rayevskaya, S. I., Prosandeev, S. A., Raevski, I. P., Kapphan, S. E.

We consider consequences of local disorder in systems experiencing first order phase transitions. Such systems can be of rather different nature. For example, manganates showing gigantic magnetoelectric effect, doped antiferroelectrics or biomembrane

Externí odkaz: http://arxiv.org/abs/cond-mat/0503387

Dielectric Response in Microscopically Heterogeneous Dielectrics: Example of KTaO_3:Nb

Autor: Prosandeev, S., Trepakov, V., Kapphan, S., Savinov, M.

Publikováno v: in Fundamental Physics of Ferroelectrics 2002, Washington 2002, Editor Ronald E. Cohen, AIP Conference Proceedings 626, Melville, New York, 2002, pp. 169 - 177

New experimental data on solid solutions of quantum paraelectrics with KTaO_3:Nb as an example are considered within a framework of a quantum theory of ferroelectric phase transitions. In order to describe the effect of local heterogeneities a percol

Externí odkaz: http://arxiv.org/abs/cond-mat/0208317

POLARON-RELATED POLAR CLUSTERS IN FERROELECTRIC RELAXORS AND NOVEL RELAXOR SYSTEMS.

Autor: S., VIKHNIN V., E., KAPPHAN S.

Publikováno v: Radiation Effects & Defects in Solids. Jan2003, Vol. 158 Issue 1-6, p383-386. 4p.

POLARONIC STATES IN FERROELECTRIC RELAXOR PMN.

Autor: VIKHNIN, V. S., KAPPHAN, S. E., KISLOVA, I. L., MARKOVIN, P. A.

Publikováno v: Radiation Effects & Defects in Solids. Jan2003, Vol. 158 Issue 1-6, p387-390. 4p.

CONGRUENT Sr 0.61 Ba 0.39 Nb 2 O 6 DOUBLY DOPED WITH Ce and Cr: PHOTO- AND THERMOLUMINESCENCE INVESTIGATIONS.

Autor: Kislova, I. L.¹, Gao, M.¹, Kapphan, S. E.¹, Pankrath, R.¹, Kutsenko, A. B.¹, Vikhnin, V. S.²

Publikováno v: Radiation Effects & Defects in Solids. Jun2002, Vol. 157 Issue 6-12, p1015-1020. 6p. 1 Graph.