Mesoscopic ferroelectric cell arrays prepared by imprint lithography

Harnagea, Catalin; Alexe, Mann; Schilling, Jöng; Choi, Jinsub; Wehnspohn, Ralf B.; Hesse, Dietnich; Gösele, Ulnich
September 2003
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1827
Academic Journal
Arrays of mesoscopic ferroelectric (Pb,Zr)TiO[sub 3] cells with lateral sizes from several micrometers down to below 300 nm were prepared applying nanoimprint lithography. The ferroelectric properties of the mesoscopic cells were investigated by scanning force microscopy in piezoresponse mode. The best chemical route to obtain ferroelectric cells was found to be the sol-gel method. Using Nb-doped SrTiO[sub 3] single crystals as bottom electrodes, the crystallization into the ferroelectric phase was uniform with grain sizes in the 35 nm range. © 2003 American Institute of Physics.


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