Influence of defects on ferroelectric properties of the (CH_{3}ΝΗ_{3})_{5}Bi_{2}Χ_{11} (Χ = Cl, Br) crystals in the vicinity of ferro-paraelectric phase transition was investigated. γ-irradiation of both crystals insignificantly shifts Tc towards higher temperature. The substitution of chlorine atoms by iodine ones in the (CH_{3}ΝΗ_{3})_{5}Bi_{2}Cl_{11} crystal drastically reduces the magnitude of the dielectric permittivity but does not influence on the temperature behaviour of the spontaneous polarization.
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.