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The double loop hysteresis in DC dependent dielectric permittivity of SrTiO3

Spartak Gevorgian (Institutionen för mikroelektronik och nanovetenskap) ; Anders Eriksson ; Anatoli Deleniv
Journal of Applied Physics (0021-8979). Vol. 92 (2002), p. 6165-6171.
[Artikel, refereegranskad vetenskaplig]

Experimental double loop hysteresis in dc field dependent dielectric permittivity in bulk single crystal SrTiO3 is reported. Small signal measurements of the permittivity are performed in the frequency range 0.5-1.5 GHz at temperatures below 77 K using electrically thin circular parallel-plate resonators. The dielectric permittivity is extracted form the measured resonant frequency. The double loop hysteresis may be caused by field induced local paraelectric/ferroelectric phase transitions, and/or switching (polarization reversal) in local opposing ferroelectric domains associated with symmetry breaking impurities/structural defects.

Nyckelord: Strontium Compounds; Ferroelectric Materials; Dielectric Hysteresis; Ferroelectric Transitions; Ferroelectric Switching; Permittivity; Dielectric Resonance; Electric Domains



Denna post skapades 2015-02-09.
CPL Pubid: 212332

 

Institutioner (Chalmers)

Institutionen för mikroelektronik och nanovetenskap (1900-2003)

Ämnesområden

Den kondenserade materiens fysik

Chalmers infrastruktur