| abstract |
A method of selecting poling parameters for poling a glass ceramic body comprising ferroelectric domains, by applying an electric field across the glass ceramic body at a certain poling temperature for a certain poling time comprises the steps of: determining an upper bound of poling temperature given by the maximum poling temperature at which uncontrolled heat-up (thermal runaway) is avoided; and selecting the poling temperature to be smaller than the upper bound, preferably close to the upper bound. |