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Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates
นักวิจัย : Woo, Chang-Su , Lee, Jin Hong , Chu, Kanghyun , Jang, Byung-Kweon , Kim, Yong-Bae , Koo, Tae Yeong , Yang, Ping , Qi, Yajun , Chen, Zuhuang , Chen, Lang , Choi, Hong Chul , Shim, Ji Hoon , Yang, Chan-Ho
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Woo, C.- S., Lee, J. H., Chu, K., Jang, B.- K., Kim, Y.- B., Koo, T. Y., et al. (2012). Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates. Physical Review B, 86(5), 054417-. , http://hdl.handle.net/10220/9361 , http://dx.doi.org/10.1103/PhysRevB.86.054417
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical review B
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Mixed-phase areas are produced in highly elongated BiFeO3 (BFO) thin films as a consequence of strain relaxation. A (001) neodymium aluminate (NdAlO3; NAO) substrate (a∼3.747 Å) prominently suppresses the strain relaxation effect and prevents the formation of mixed-phase regions. This creates a pathway to the thick, quasipure, highly elongated phases required for magnetoelectric applications. We characterize the crystal structure, the interface between film and substrate, the surface morphology, and the ferroelectric domain structure of BFO films on NAO substrates and compare them with those of films on typical lanthanum aluminate substrates. The underlying mechanisms are discussed based on the intriguing nature of phase competition in bismuth ferrite phases using first principles density functional calculations for the misfit strain-dependent total energy.

บรรณานุกรม :
Woo, Chang-Su , Lee, Jin Hong , Chu, Kanghyun , Jang, Byung-Kweon , Kim, Yong-Bae , Koo, Tae Yeong , Yang, Ping , Qi, Yajun , Chen, Zuhuang , Chen, Lang , Choi, Hong Chul , Shim, Ji Hoon , Yang, Chan-Ho . (2555). Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Woo, Chang-Su , Lee, Jin Hong , Chu, Kanghyun , Jang, Byung-Kweon , Kim, Yong-Bae , Koo, Tae Yeong , Yang, Ping , Qi, Yajun , Chen, Zuhuang , Chen, Lang , Choi, Hong Chul , Shim, Ji Hoon , Yang, Chan-Ho . 2555. "Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Woo, Chang-Su , Lee, Jin Hong , Chu, Kanghyun , Jang, Byung-Kweon , Kim, Yong-Bae , Koo, Tae Yeong , Yang, Ping , Qi, Yajun , Chen, Zuhuang , Chen, Lang , Choi, Hong Chul , Shim, Ji Hoon , Yang, Chan-Ho . "Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Woo, Chang-Su , Lee, Jin Hong , Chu, Kanghyun , Jang, Byung-Kweon , Kim, Yong-Bae , Koo, Tae Yeong , Yang, Ping , Qi, Yajun , Chen, Zuhuang , Chen, Lang , Choi, Hong Chul , Shim, Ji Hoon , Yang, Chan-Ho . Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.