Chapter 2

Materials Selection, Processing, and Characterization Technologies

Jing Ma

Jing Ma

Tsinghua University, School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Beijing, 100084 China

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Lu Song

Lu Song

Tsinghua University, School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Beijing, 100084 China

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Chen Liu

Chen Liu

Tsinghua University, School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Beijing, 100084 China

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Chengzhou Xin

Chengzhou Xin

Tsinghua University, School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Beijing, 100084 China

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First published: 07 July 2017

Summary

Magnetoelectric (ME) composites have recently attracted an ever-increasing interest and provoked a great number of research activities, driven by profound physics from coupling between ferroelectric and magnetic orders, as well as potential applications in novel multifunctional devices, such as sensors, transducers, memories, and spintronics. This chapter discusses the development and the consideration of materials selection of polymer-based magnetoelectric (ME) composites, followed by an introduction to the characterization technologies of ferroelectric/piezoelectric, magnetism, and direct/converse ME coupling, which are essential in the study of ME composites. In polymer-based ME composites in which the polymer acts as the binder, two categories are common. One is the structure - magnetostrictive and piezoelectric particles are mixed or separately embedded in a polymer matrix - and the other is that the polymer only acts as the binding boundary layer. The chapter discusses the popular characterization techniques and facilities for magnetism measurement and an important branch, particularly for ME composites, magnetostriction measurement.

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