PFM Reference Samples
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I have decided that for beginning PRFM scanning probe microscopists such as myself, a standard sample, with known, well defined polarization regions would make instrument setup and operation easier.
I have already investigated periodically poled lithium niobate gratings, but these are $1000 to $2000. Are there less expensive options? -
Perhaps the easiest samples to work with are sol-gel PZT films and PZT ceramics. They form easy to observe and reliable domain contrast, and samples can be few 10s $. In many cases, it is possible to get them from old actuators, etc
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While PZT is the easiest to pole, is it straightforward to obtain a relevant quantitative electromechanical coupling coefficient? In my experience this varies with processing conditions,etc... so we usually use barium titantate single crystals.
It would be great to PZT if possible.