ABSTRAK
Model dinamis Landau Khalatnikov di gunakan untuk mempelajari energi bebas Gibbsdan kurva histeresis lapisan tipis Barium Zirkonium Titanat (BZT) dengan doping Lantanum danIndium. Model statis Landau Devonshire juga di pelajari dengan bahan yang sama. Hasil modeldigambarkan dan dianalisis menggunakan pogram Delphi 6 buatan mandiri yang dijalankan padaWindows. Kedua hasil model dibandingkan dengan kurva hasil eksperimen yang diukurmenggunakan rangkaian Sawyer-Tower. Hasil kesesuaian model dan eksperimen di tunjukanoleh R-Weighted Pattern (Rwp), yang merupakan perhitungan satistik untuk menunjukankesalahan. Beberapa parameter seperti frekuensi, amplitudo medan listrik dan faktor skaladivariasikan untuk merubah model secara halus. Hasil menunjukan nilai Rwp kurang dari 10%menunjukan model cukup memuaskan.

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ABSTRACT
Dynamic Landau Khalatnikov model is utilized to study Gibbs free energy and hysteresiscurves of Barium Zirconium Titanate (BZT) thin films doped by Lanthanum and Indium. Thestatic Landau-Devonshire was also explored for the same cases. The model is plotted andanalysed using home made Delphi 6 program running on Windows platform. Both model is thecompared with the experimental hysteresis curves which were measured by using Sawyer-Towercircuit. The matching of the model and experiment is indicated by R-Weighted Pattern (Rwp),which is a statistical number to indicate the discrepancy. By varying the adjustable parameterssuch as frequency, energy amplitude and scale factor to model was slowly modified. The resultsshowed that Rwp was less than 10% that indicates the model is satisfactory.