Results 61 to 70 of about 21,055 (268)

Coupled Ferroelectric–Photoelectrochemical in Water Reduction Over BiFeO3 Thin Film Heterostructure Modulated by Rare‐Earth Doping

Advanced Functional Materials, EarlyView.
Gd‐doped BFO (BGFO) exhibits a ∼2‐order reduction in leakage current owing to its lowest content of oxygen vacancies. This leads to a ∼2.5‐fold increase in remnant polarization. These improvements in BGFO effectively boost charge separation and transportation, resulting in the greatest incident photon‐to‐current efficiency of 12.9 ± 0.73% and a ∼1.5 ...
Ming‐Wei Chu, Narong Chanlek, Cheng‐Sao Chen, Pin‐Yi Chen, Kuei‐Chih Feng, Chi‐Shun Tu, Chang Fu Dee, Wei Sea Chang   +7 more
wiley   +1 more source

Dzyaloshinskii-Moriya Interaction and Spiral Order in Spin-orbit Coupled Optical Lattices

, 2015
We show that the recent experimental realization of spin-orbit coupling in ultracold atomic gases can be used to study different types of spin spiral order and resulting multiferroic effects.
AB Kuklov, C Sen, C Weitenberg, DN Basov, E Altman, F Lin, G Catalan, G Jin, GR Blake, H Katsura, H Katsura, I Bloch, IA Sergienko, IA Sergienko, IE Dzyaloshinskii, J Radic, J Struck, K Jiménez-Garca, L-M Duan, LW Cheuk, M Dawber, M Fiebig, M Greiner, M Köhl Khl, M Mostovoy, P Wang, R Ramesh, S Chen, S Dong, S Liang, S Trotzky, S-W Cheong, T Kimura, T Moriya, TA Corcovilos, W Eerenstein, WS Bakr, WS Cole, Y Tokura, Y Tokura, Y Zhang, Y Zhang, Y Zhang, Y-J Lin, Z Cai, Z Fu   +45 more
core   +1 more source

Unidirectional terahertz light absorption in the pyroelectric ferrimagnet CaBaCo4O7 [PDF]

, 2015
Spin excitations were studied by absorption spectroscopy in CaBaCo4O7 which is a type-I multiferroic compound with the largest magnetic-order induced ferroelectric polarization ({\Delta}P=17mC/m2) reported, so far. We observed two optical magnon branches:
Bordács, S., Kocsis, V., Nagel, U., Rõõm, T., Taguchi, Y., Takahashi, Y., Tokunaga, Y., Tokura, Y.   +7 more
core   +2 more sources

Thermodynamic potential and phase diagram for multiferroic bismuth ferrite (BiFeO 3 )

npj Computational Materials, 2017
Multiferroics: The potential of bismuth ferrite A theoretical approach for describing the complex phase diagram of the multiferroic bismuth ferrite has been developed.
Dmitry V. Karpinsky, Eugene A. Eliseev, Fei Xue, Maxim V. Silibin, Alexandra Franz, Maya D. Glinchuk, Igor O. Troyanchuk, Sergey A. Gavrilov, Venkatraman Gopalan, Long-Qing Chen, Anna N. Morozovska   +10 more
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Prediction of intrinsic multiferroicity and large valley polarization in a layered Janus material

npj Computational Materials
Two-dimensional (2D) intrinsic multiferroics have attracted considerable attention for the next generation of advanced information technologies. Herein, we report that bilayer Janus FeSCl, a novel 2D system designed by substituting sulfur in monolayer 1T-
Yulin Feng, Shaoxuan Qi, Yangyang Ren, Meng Liu, Na Liu, Meifeng Liu, Qing Yang, Sheng Meng   +7 more
doaj   +1 more source

Some current problems in perovskite nano-ferroelectrics and multiferroics: kinetically-limited systems of finite lateral size

Science and Technology of Advanced Materials, 2015
We describe some unsolved problems of current interest; these involve quantum critical points in ferroelectrics and problems which are not amenable to the usual density functional theory, nor to classical Landau free energy approaches (they are ...
James F Scott, Alina Schilling, S E Rowley, J Marty Gregg   +3 more
doaj   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

Collective magnetism at multiferroic vortex domain walls

, 2012
Topological defects have been playgrounds for many emergent phenomena in complex matter such as superfluids, liquid crystals, and early universe. Recently, vortex-like topological defects with six interlocked structural antiphase and ferroelectric ...
Abrahams S. C., Chae S. C., Chae S. C., Chaikin P. M., Cheong S. W., Choi T., Dzyaloshinskii I. E., Eerenstein W., Fabrèges X., Fennie C. J., Fiebig M., Fiebig M., Fraisse A. A., Goltsev A. V., Israel C., Jungk T., Katsufuji T., Koehler W. C., Lochocki E. B., Lonkai T., Meier D., Mesaros A., Moriya T., Mostovy M., Munawar I., N. Lee, Nandi S., Park S., Pfleiderer C., Ramesh R., Rugar D., S.-W. Cheong, Salama H. A., Scott J. F., Seidel J., Skumryev V., Spaldin N. A., Spaldin N. A., Spaldin N. A., Tokunaga Y., Van Aken B. B., Weida Wu, Wu W., Y. J. Choi, Yanan Geng, Yen F., Yu X. Z., Zhang Q. H.   +47 more
core   +1 more source

Atomically Resolved Acoustic Dynamics Coupled with Magnetic Order in a Van der Waals Antiferromagnet

Advanced Materials, EarlyView.
Magnetically coupled acoustic phonon modes (f1, f2, f3) are captured by ultrafast X‐ray diffraction in a prototypical van der Waals antiferromagnet FePS3, including their atomic displacement vectors (u) and the acoustic propagation wave vectors (k). Notably, the atomic displacement vector and amplitude of these modes, represented by the direction and ...
Faran Zhou, Kyle Hwangbo, Sung Soo Ha, Xiao‐Wei Zhang, Sae Hwan Chun, Jaeku Park, Intae Eom, Qianni Jiang, Zekai Yang, Marc Zajac, Sungwon Kim, Sungwook Choi, Zhaodong Chu, Kyoung Hun Oh, Yifan Su, Alfred Zong, Elton J. G. Santos, Ting Cao, Jiun‐Haw Chu, Stephan O. Hruszkewycz, Nuh Gedik, Di Xiao, Hyunjung Kim, Xiaodong Xu, Haidan Wen   +24 more
wiley   +1 more source