Journal Article

PreJuSER-30049

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Piezoresponse force microscopy of lead titanate nanograins possibly reaching the limit of ferroelectricity

Roelofs, A. ; Schneller, T. ; Szot, K.FZJ* ; Waser, R.FZJ*

2002
American Institute of Physics Melville, NY

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/1227  doi:10.1063/1.1534412

Abstract: Single ferroelectric lead titanate (PTO) grains down to 15 nm were fabricated by chemical solution deposition. Varying the dilution of the precursor solution leads to different grain sizes between 15 and 200 nm. The grain-size-dependent domain configuration was studied using three-dimensional piezoresponse force microscopy (PFM). It is found that the PTO. grains in a dense film contain laminar 90degrees domain walls, whereas separated PTO grains show more complicated structures of mainly 180degrees domain walls. For grains smaller than 20 rim, no piezoresponse was observed and we suppose this could be due to the transition from the ferroelectric to the superparaelectric phase which has no spontaneous polarization. Recent calculations showed that the ferroelectricity of fine ferroelectric particles decrease with decreasing particle size. From these experiments the extrapolated critical size of PTO. particles was found to be around 4-14 nm. (C) 2002 American Institute of-Physics.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Elektrokeramische Materialien (IFF-EKM)

Research Program(s):

1. Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik (I01)

Appears in the scientific report 2002
Notes: Nachtrag
Notes: This version is available at the following Publisher URL: http://apl.aip.org

---

Database coverage:

---