Ferroelectricity in Highly Ordered Arrays of Ultra-Thin-Walled Pb(Zr,Ti)O 3 Nanotubes Composed of Nanometer-Sized Perovskite Crystallites
2008; American Chemical Society; Volume: 8; Issue: 7 Linguagem: Inglês
10.1021/nl080240t
ISSN1530-6992
AutoresJongok Kim, Sun Yang, Yong Chan Choi, Jin Kyu Han, Keum Ok Jeong, Yong Ju Yun, Dong Jik Kim, Sang Mo Yang, Doohee Yoon, Hyeonsik Cheong, Ki‐Seog Chang, Tae Won Noh, Sang Don Bu,
Tópico(s)Acoustic Wave Resonator Technologies
ResumoWe report the first unambiguous ferroelectric properties of ultra-thin-walled Pb(Zr,Ti)O 3 (PZT) nanotube arrays, each with 5 nm thick walls and outer diameters of 50 nm. Ferroelectric switching behavior with well-saturated hysteresis loops is observed in these ferroelectric PZT nanotubes with P r and E c values of about 1.5 microC cm (-2) and 86 kV cm (-1), respectively, for a maximum applied electric field of 400 kV cm (-1). These PZT nanotube arrays (10 (12) nanotubes cm (-2)) might provide a competitive approach toward the development of three-dimensional capacitors for the terabyte ferroelectric random access memory.
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