Results 31 to 40 of about 684 (175)

Electric-Field-Induced Phase Transformation and Frequency-Dependent Behavior of Bismuth Sodium Titanate–Barium Titanate [PDF]

Materials, 2020
The electric field response of the lead-free solid solution (1−x)Bi0.53Na0.47TiO3–xBaTiO3 (BNT–BT) in the higher BT composition range with x = 0.12 was investigated using in situ synchrotron X-ray powder diffraction. An introduced Bi-excess non-stoichiometry caused an extended morphotropic phase boundary, leading to an unexpected fully reversible ...
Kai-Yang Lee, Xi Shi, Nitish Kumar, Mark Hoffman, Martin Etter, Stefano Checchia, Jens Winter, Lucas Lemos da Silva, Daniela Seifert, Manuel Hinterstein   +9 more
openaire   +6 more sources

Surface ferromagnetism of lead-free ferroelectric bismuth sodium titanate materials

Communications in Physics
The role of complex surface defect on the magnetic at the (110) surface of bismuth sodium titanate (Bi0.5Na0.5TiO3) was discussed based on the first-principles calculation.
Dang Duc Dung, Tien Lam Vu, Huu Lam Nguyen, Quoc Van Duong, Hoang Thoan Nguyen, Hoang Linh Nguyen, Ngoc Trung Nguyen   +6 more
doaj   +1 more source

The complex structural mechanisms behind strain curves in bismuth sodium titanate–barium titanate [PDF]

Applied Physics Letters, 2020
In this work, the lead-free composition (1-x)Bi0.5Na0.5TiO3–xBaTiO3 (BNT–BT) with x = 0.12 was investigated using in situ Synchrotron x-ray powder diffraction. With the applied electric field, the pseudo-cubic relaxor phase reversibly transforms to a ferroelectric state. The reversibility is still preserved after 104 bipolar electric field cycles.
Kai-Yang Lee, Xi Shi, Nitish Kumar, Mark Hoffman, Martin Etter, Jens Winter, Lucas Lemos da Silva, Daniela Seifert, Manuel Hinterstein   +8 more
openaire   +3 more sources

Ferroelectric and Piezoelectric Properties of (Mg_1/3Nb_2/3)⁴⁺-Doped Bismuth Sodium Titanate Ceramics

Ceramics
Lead-free (Bi1/2Na1/2)(Ti1−x(Mg1/3Nb2/3)x)O3 ceramics were synthesized using the solid-phase method, and the effects of varying (Mg1/3Nb2/3)4+ content, substituting for Ti4+ ions at the B-site of the BNT perovskite lattice, on piezoelectric performance ...
Yonggang Zhao, Ning Yang, Yi Chen, Xingting Li, Luyao Wang, Peng Wang, Guangzhi Dong   +6 more
doaj   +1 more source

Impedance spectroscopy of bismuth sodium titanate: Barium titanate ceramics with manganese doping [PDF]

Journal of the American Ceramic Society, 2017
Abstract In this work we use Impedance Spectroscopy ( IS ) to study lead‐free ceramics of perovskite structure (Bi 1/2 Na 1/2 TiO 3 ) 0.
V. Hugo Schmidt, Noah Archer, Chi‐Shun Tu   +2 more
openaire   +1 more source

Emerging Memory and Device Technologies for Hardware‐Accelerated Model Training and Inference

Advanced Electronic Materials, EarlyView.
This review investigates the suitability of various emerging memory technologies as compute‐in‐memory hardware for artificial intelligence (AI) applications. Distinct requirements for training‐ and inference‐centric computing are discussed, spanning device physics, materials, and system integration.
Yoonho Cho, Dae‐won Kim, Yujin Kim, Jung‐Heum Na, Yuwon Jeong, Dong‐Yeop Lee, Shinhyun Choi   +6 more
wiley   +1 more source

From Materials to Systems: Challenges and Solutions for Fast‐Charge/Discharge Na‐Ion Batteries

Advanced Energy Materials, EarlyView.
This review systematically analyzes the key characteristics limiting the fast‐charge/discharge capability of Na‐ion batteries (SIBs) from a multi‐scale perspective encompassing electrode materials, the electrode‐electrolyte interface, and the system. Furthermore, it presents practical solution strategies for the fundamental issues arising at each scale,
Bonyoung Ku, Sangbin Park, Sunha Hwang, Sunghyun Lim, Won‐Sub Yoon, Jongsoon Kim   +5 more
wiley   +1 more source

Enhancement of the phase, optical and dielectric studies of Bi0.5Na0.5TiO3 (BNT) based structure ceramics

Journal of Saudi Chemical Society, 2023
The Mg-based dielectric ceramics of (Bi0.5Na0.5)(1−x)MgxTiO3, 0.00 ≤ x ≤ 0.04 was successfully synthesized by mixed oxide route at 850 °C for 2 hrs. The XRD result revealed the single phase monoclinic crystal structure without any secondary phases.
Anwar Syed, Amir Sohail Khan, Amir Ullah, Mahidur R. Sarker, Muhammad Tahir Khan, Asad Ali, Haroon Ur Rashid, Vineet Tirth, Abid Zaman   +8 more
doaj   +1 more source

Direct Determination of Cationic Disordering in Sodium Bismuth Titanate

Applied Microscopy, 2012
The relaxor ferroelectric feature in lead-free perovskite oxides, where the dipoles are randomly oriented and they can be feasibly aligned parallel to the external bias, is attracting lots of attention in the field of piezoelectric materials science, since it is one of candidates to replace the toxic lead-based materials that are still being ...
Si-Young Choi, Yuichi Ikuhara
openaire   +2 more sources

Emerging Materials and Future Strategies for Solid Oxide Electrochemical Cells

Advanced Energy Materials, EarlyView.
Solid oxide electrochemical cells operate under strongly coupled electrochemical and thermodynamic conditions, where performance is constrained by interactions among crystal structure, defect chemistry, and interfacial evolution. This review, based on a structure‐defect‐property‐durability framework, reveals the roles of lattice symmetry and defect ...
Qiuchun Lu, Yufei Zhang, Han Zhao, Pooi See Lee, Daniel H.C. Chua   +4 more
wiley   +1 more source