%0 Conference Paper %K Thin films %K Crystal structure %K Ferroelectric materials %K Dielectric materials %K Permittivity %K Magnetic domains %K 180° c-c domain wall %K 90° a-c domain wall %K Linear dielectric constant %K Nonlinear dielectric constant %K PZT thin films %K Scanning nonlinear dielectric microscopy %A Y Cho %A K Matsuura %A N Valanoor %A Ramamoorthy Ramesh %B Ferroelectrics %D 2003 %G eng %P 171-180 %R 10.1080/00150190390222961 %S Ferroelectrics %T Direct domain wall thickness measurement using scanning nonlinear dielectric microscopy %V 292