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Dielectric relaxation studies in Cs2SO4

J.E. Diosa ; R.A. Vargas ; Ingvar Albinsson ; Bengt-Erik Mellander (Institutionen för teknisk fysik, Fasta tillståndets fysik)
FERROELECTRICS (0015-0193). Vol. 333 (2006), p. 253-258.
[Artikel, refereegranskad vetenskaplig]

Dielectric measurements of Cs2SO4 show a distinct relaxation at low frequencies at several isotherms ( T < 651 degrees C). For example, the relaxation frequency is around 5.1 kHz at 376 degrees C and increases to approximately 1 MHz at 651 degrees C. The relaxation has an activation energy of 0.97 eV, which is in close agreement whit that of Cs+ transport. We suggest that the observed dielectric relaxation could be produced by the Cs+ jump and SO4- reorientation that cause distortion and change the local lattice polarizability inducing dipoles like CsSO4-.



Denna post skapades 2009-01-10. Senast ändrad 2010-02-26.
CPL Pubid: 84882

 

Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Fasta tillståndets fysik (2005-2015)

Ämnesområden

Den kondenserade materiens fysik

Chalmers infrastruktur