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"Ecological restrictions in many parts of the world are demanding the elimination of Pb from all consumer items. At this moment in the piezoelectric ceramics industry, there is no issue of more importance than the transition to lead-free materials. The goal of Lead-Free Piezoelectrics is to provide a comprehensive overview of the fundamentals and developments in the field of lead-free materials and products to leading researchers in the world. The text presents chapters on demonstrated applications of the lead-free materials, which will allow readers to conceptualize the present possibilities and will be useful for both students and professionals conducting research on ferroelectrics, piezoelectrics, smart materials, lead-free materials, and a variety of applications including sensors, actuators, ultrasonic transducers and energy harvesters."

"Fenomena pembalikan polarisasi pada material film tipis BST akan dipelajari dengan menggunakan pendekatan seperti pada material ferroelektrik Bulk. Pendekatan statis dan dinamis akan dilakukan dengan menggunakan persamaan energi bebas Landau - Devonshire (LD) dan persamaan Landau - Kalathikov (LK) untuk memperlihatkan hasil minimum dan maximum dari arus pembalikan polarisasi. Dengan menggunakan pendekatan respon medan listrik yang bersifat sinusoidal akan diperlihatkan pula loop histerisis dengan memvariasikan frekuensi dan amplitudo dari medan listrik yang diberikan.

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Switching phenomenon in BST Thin film will be considered by approaching of Bulk ferroelectric material. Static and dynamic approach will be formulated by combination of Landau - Devinshire (LD) and Landau - Kalathikov (LK) equation for determined maximum and minimum of switching current. Hysterisis loop was developed using sinusoidal electrical field response by variation in frequency and amplitude of electrical field."