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Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures
นักวิจัย : You, Lu , Caesario, Petrus , Fang, Liang , Ren, Peng , Wang, Le , Zhou, Yang , Gruverman, Alexei , Wang, Junling
คำค้น : DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : You, L., Caesario, P., Fang, L., Ren, P., Wang, L., Zhou, Y., et al. (2014). Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures. Physical review B, 90, 134110 – . , http://hdl.handle.net/10220/24412 , http://dx.doi.org/10.1103/PhysRevB.90.134110
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical review B
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The recent discoveries of both chemical-driven and strain-driven morphotropic phase boundaries (MPBs) in BiFeO3 (BFO) thin films have opened up new horizons in developing high-performance lead-free piezoelectrics. An attempt to bridge these two MPBs is made by doping La into highly strained BFO thin films with the coexistence of tetragonal-like and rhombohedral-like phases. The structural, morphological, and ferroelectric properties of such films are investigated. It is observed that La doping changes the energy landscape between the tetragonal-like and the rhombohedral-like polymorphs due to the chemical pressure imposed by the La substitution. Polar instability is found upon increasing La doping for the in-plane polarization component, which correlates with the vanishing of in-plane ferroelectric domain structures. The transition sequence of the in-plane ferroelectric polarization resembles that previously reported for the bulklike rhombohedral phase of BFO under continuous La doping, indicating the universality of the chemical-alloying effect on the ferroelectric order.

บรรณานุกรม :
You, Lu , Caesario, Petrus , Fang, Liang , Ren, Peng , Wang, Le , Zhou, Yang , Gruverman, Alexei , Wang, Junling . (2557). Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
You, Lu , Caesario, Petrus , Fang, Liang , Ren, Peng , Wang, Le , Zhou, Yang , Gruverman, Alexei , Wang, Junling . 2557. "Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
You, Lu , Caesario, Petrus , Fang, Liang , Ren, Peng , Wang, Le , Zhou, Yang , Gruverman, Alexei , Wang, Junling . "Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
You, Lu , Caesario, Petrus , Fang, Liang , Ren, Peng , Wang, Le , Zhou, Yang , Gruverman, Alexei , Wang, Junling . Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.