IMPROVED ELECTRIC FIELD POLING OF FERROELECTRIC MA

专利名称：IMPROVED ELECTRIC FIELD POLING OF

FERROELECTRIC MATERIALS

发明人：GAWITH, Corin, Barry, Edmund,MAJOR, Huw,

Edward,MING, Lu,SMITH, Peter, George,Robin

申请号：EP08762328.6申请日：20080611公开号：EP2165240B1公开日：20150812

摘要：A method of inducing a periodic variation of nonlinearity value in a sample offerroelectric material comprises arranging a pair of electrodes on opposite faces of thesample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after thepredetermined time, applying a current-controlled poling voltage across the sampleusing the electrodes, to produce domain inversion in the sample according to the desiredpattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field ormore, and applied for a pre-determined time between 1 and 100 seconds.

申请人：UNIVERSITY OF SOUTHAMPTON

代理机构：D Young & Co LLP

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