Bundles of polytwins as meta-elastic domains in the thin polycrystalline simple multi-ferroic system PZT

被引:35
作者
Ivry, Yachin [1 ]
Chu, D. P. [2 ]
Durkan, Colm [1 ]
机构
[1] Univ Cambridge, Nanosci Ctr, Cambridge CB3 0FF, England
[2] Univ Cambridge, Elect Engn Div, Cambridge CB3 0FA, England
关键词
SCANNING FORCE MICROSCOPY; POLARIZATION; SCALE;
D O I
10.1088/0957-4484/21/6/065702
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We used enhanced piezo-response force microscopy (E-PFM) to investigate both ferroelastic and ferroelectric nanodomains in thin films of the simple multi-ferroic system PbZr0.3Ti0.7O3 (PZT). We show how the grains are organized into a new type of elastic domain bundles of the well-known periodic elastic twins. Here we present these bundle domains and discuss their stability and origin. Moreover, we show that they can arrange in such a way as to release strain in a more effective way than simple twinning. Finally, we show that these bundle domains can arrange to form the macroscopic ferroelectric domains that constitute the basis of ferroelectric-based memory devices.
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页数:7
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