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Ferroelectricity in highly ordered arrays of ultra-thin-walled Pb(Zr,Ti)O3 nanotubes composed of nanometer-sized perovskite crystallites
- Kim, Jongok;
- Yang, Sun A.;
- Choi, Yong Chan;
- Han, Jin Kyu;
- Jeong, Keum Ok;
- ... Cheong, Hyeonsik;
- 외 7명
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127초록
We 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 mu C 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.
키워드
LEAD-ZIRCONATE-TITANATE; PHASE-TRANSITIONS; PARTICLES; PBTIO3; TUBES
- 제목
- Ferroelectricity in highly ordered arrays of ultra-thin-walled Pb(Zr,Ti)O3 nanotubes composed of nanometer-sized perovskite crystallites
- 저자
- Kim, Jongok; Yang, Sun A.; Choi, Yong Chan; Han, Jin Kyu; Jeong, Keum Ok; Yun, Yong Ju; Kim, Dong Jik; Yang, Sang Mo; Yoon, Doohee; Cheong, Hyeonsik; Chang, Ki-Seog; Noh, Tae Won; Bu, Sang Don
- 발행일
- 2008-07
- 유형
- Article
- 저널명
- Nano Letters
- 권
- 8
- 호
- 7
- 페이지
- 1813 ~ 1818