Title :
Evolution of nanodomains in the uniaxial relaxor Sr/sub 0.61/Ba/sub 0.39/Nb/sub 2/O/sub 6/:Ce
Author :
Shvartsman, Vladimir V. ; Kleemann, Wolfgang
Author_Institution :
Angewandte Phys., Univ. Duisburg
fDate :
12/1/2006 12:00:00 AM
Abstract :
The evolution of the nanodomain pattern of the uniaxial relaxor ferroelectric strontium barium niobate doped with cerium was studied by piezoresponse force microscopy (PFM). The fractal-like nanodomains observed at room temperature decay on heating. At temperatures up to about 15 K above the Curie temperature, Tc = 320 K, areas of correlated polarization are still visible. On cooling from the paraelectric state to below Tc, a slow isothermal growth of nanodomain was found. The mean domain size increases according to a logarithmic law as predicted for the three-dimensional random field Ising model
Keywords :
Ising model; atomic force microscopy; barium compounds; cerium; electric domains; ferroelectric Curie temperature; niobium compounds; oxygen compounds; relaxor ferroelectrics; strontium compounds; 320 K; 3D random field Ising model; Curie temperature; Sr0.61Ba0.39Nb2O6:Ce; cerium; isothermal nanodomain growth; nanodomain pattern; paraelectric state; piezoresponse force microscopy; strontium barium niobate; uniaxial relaxor ferroelectric; Barium; Cerium; Fractals; Heating; Microscopy; Niobium compounds; Polarization; Relaxor ferroelectrics; Strontium; Temperature;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2006.173
