{"id":746,"date":"2012-07-10T02:08:30","date_gmt":"2012-07-10T07:08:30","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?post_type=wm_projects&#038;p=746"},"modified":"2018-03-10T02:19:25","modified_gmt":"2018-03-10T07:19:25","slug":"kinetically-stabilized-metastable-polarization-states-in-ferroelectrics","status":"publish","type":"wm_projects","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/project\/kinetically-stabilized-metastable-polarization-states-in-ferroelectrics\/","title":{"rendered":"Kinetically stabilized metastable polarization states in ferroelectrics"},"content":{"rendered":"<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\"><img data-attachment-id=\"747\" data-permalink=\"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/project\/kinetically-stabilized-metastable-polarization-states-in-ferroelectrics\/nbthysteresisloop\/\" data-orig-file=\"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?fit=1648%2C1651&amp;ssl=1\" data-orig-size=\"1648,1651\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Experimental vs Simulated Hysteresis Loop Comparison for NBT\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?fit=657%2C658&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?fit=1060%2C1062&amp;ssl=1\" loading=\"lazy\" class=\"alignright  wp-image-747\" src=\"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?resize=286%2C286&#038;ssl=1\" alt=\"\" width=\"286\" height=\"286\" srcset=\"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?resize=657%2C658&amp;ssl=1 657w, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?resize=768%2C769&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?resize=1060%2C1062&amp;ssl=1 1060w, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?resize=420%2C420&amp;ssl=1 420w, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2018\/03\/NBThysteresisLoop.jpg?w=1648&amp;ssl=1 1648w\" sizes=\"(max-width: 286px) 100vw, 286px\" data-recalc-dims=\"1\" \/>By directly using experimental hysteresis loop data, a Landau theory-based model has been developed to investigate the effects of externally applied stimuli (electric field, stress, and temperature) on the average, time-dependent response in ferroelectric ceramics. For both PLZT and BNT-BT-KNN systems, experimentally observed (macroscopic) metastable states are a result of a free energy minimum that develops at a zero polarization state when the sample is subject to an externally applied field. Additionally, the frequency dependent hysteresis response demonstrates that a transition between relaxor ferroelectric and antiferroelectric develops at a critical cycling frequency, in agreement with the literature. The appearance of frequency-induced and electric field amplitude-induced kinetically stabilized phases is proposed and summarized in terms of frequency-stress and frequency-temperature response maps.<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p class=\"post-excerpt\" class=\"post-excerpt\">By directly using experimental hysteresis loop data, a Landau theory-based model has&hellip;<\/p>\n","protected":false},"author":1,"featured_media":747,"template":"","meta":{"advanced_seo_description":""},"project_category":[27,38,28],"project_tag":[29,42,61],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/wm_projects\/746"}],"collection":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/wm_projects"}],"about":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/types\/wm_projects"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media\/747"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=746"}],"wp:term":[{"taxonomy":"project_category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/project_category?post=746"},{"taxonomy":"project_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/project_tag?post=746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}