Electrical properties of 0.90Pb[(Mg,Zn)1/3Ta2/3]O3-0.10PbTiO3 relaxor

• Autorzy: Prasad S. , Prasad K. , Choudhary S.N. , Sinha T.P.
• Języki publikacji: EN

Abstrakty

EN

Polycrystalline 0.90Pb[(Mg2/3Zn1/3)1/3Ta2/3] O3-0.10PbTiO3 having a tetragonal perovskite type structure was prepared by the high temperature solid-state reaction method. Dielectric studies showed the relaxor behaviour with diffuse phase transition. High value of ∈max > 10000 was realized with the temperature of the permittivity maximum (Tm) around room temperature at 1 kHz. The frequency dependence of Tm has been modeled using Vogel-Fulcher relation. The dielectric relaxation in the present system was found analogous to the magnetic relaxation in spin-glass system. The shape of the complex impedance curve indicated that the system exhibited almost Debye type dielectric relaxation at 350 °C, where as non-Debye character was observed at temperatures ≥ 325 °C. Further the relaxation frequency was found to shift towards higher frequencies with an increase in temperature.

Słowa kluczowe

EN

relaxor ferroelectrics; dielectric property; diffuse phase transition; dielectric relaxation

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2008
• Tom: Vol. 26, No. 3
• Strony: 475--485
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Prasad S.

autor

Prasad K.

autor

Choudhary S.N.

autor

Sinha T.P.

• Materials Research Laboratory, University Department of Physics, T. M. Bhagalpur University, Bhagalpur 812 007, India,

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