Results 11 to 20 of about 22,991 (219)

Dielectric and polarization experiments in high loss dielectrics: a word of caution [PDF]

, 2008
The recent quest for improved functional materials like high permittivity dielectrics and/or multiferroics has triggered an intense wave of research. Many materials have been checked for their dielectric permittivity or their polarization state.
Lines M. E., M. A. Subramanian, M. Maglione, Maglione M., Sze S. M., Van Turnhout J.   +5 more
core   +4 more sources

Nonfrustrated magnetoelectric with incommensurate magnetic order in magnetic field

, 2007
We discuss a model nonfrustrated magnetoelectric in which strong enough magnetoelectric coupling produces incommensurate magnetic order leading to ferroelectricity. Properties of the magnetoelectric in magnetic field directed perpendicular to wave vector
A. V. Syromyatnikov, M. Fiebig, N. Hur, S.-W. Cheong   +3 more
core   +1 more source

Ferroelectric Phase Transitions in Ultra-thin Films of BaTiO3 [PDF]

, 2007
We present molecular dynamics simulations of a realistic model of an ultrathin film of BaTiO$_3$ sandwiched between short-circuited electrodes to determine and understand effects of film thickness, epitaxial strain and the nature of electrodes on its ...
Jaita Paul, K. Binder, M. E. Lines, Takeshi Nishimatsu, Umesh V. Waghmare, Yoshiyuki Kawazoe   +5 more
core   +2 more sources

Manipulating Multiple Order Parameters via Oxygen Vacancies: The case of Eu0.5Ba0.5TiO3-{\delta} [PDF]

, 2017
Controlling functionalities, such as magnetism or ferroelectricity, by means of oxygen vacancies (VO) is a key issue for the future development of transition metal oxides.
Borisevich, Albina Y., Bowlan, John, Chen, Bin, Chen, Hou-Tong, Dai, Jiahong, Gu, Junxing, Guo, Haizhong, He, Qian, Hu, Zhijun, Jin, Kuijuan, Ju, Sheng, Li, Run-Wei, Li, Weiwei, Ling, Langsheng, Pi, Li, Ruediger, Andreas, Shen, Shipeng, Shi, Daning, Sun, Young, Velasco-Davalos, Ivan A., Wang, Haiyan, Wang, Le, Wang, Yongqiang, Wu, Yangjiang, Yang, Hao, Yarotski, Dmitry A., Zeng, Huizhong, Zhang, Wenrui, Zhang, Yuheng, Zhao, Run   +29 more
core   +3 more sources

Impurity-doping induced ferroelectricity in frustrated antiferromagnet CuFeO2

, 2006
Dielectric responses have been investigated on the triangular-lattice antiferromagnet CuFeO2 and its site-diluted analogs CuFe1-xAlxO2 (x=0.01 and 0.02) with and without application of magnetic field.
Iguchi, S., Onose, Y., Seki, S., Shiomi, Y., Tokura, Y., Yamasaki, Y.   +5 more
core   +1 more source

Interplay of 4f-3d Magnetism and Ferroelectricity in DyFeO3

, 2013
DyFeO3 exhibits a weak ferromagnetism (TNFe ~ 645 K) that disappears below a spin-reorientation (Morin) transition at TSRFe ~ 50 K. It is also known that applied magnetic field induces ferroelectricity at the magnetic ordering temperature of Dy-ions ...
Chakrabarti, Mahuya, Rajeswaran, B., Rao, C. N. R., Sanyal, D., Sundarayya, Y., Sundaresan, A.   +5 more
core   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

Advanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Ferroelectricity in ultra-thin perovskite films

, 2005
We report studies of ferroelectricity in ultra-thin perovskite films with realistic electrodes. The results reveal stable ferroelectric states in thin films less than 10 \AA thick with polarization normal to the surface.
Alexie M. Kolpak, Andrew M. Rappe, M. E. Lines, Na Sai   +3 more
core   +1 more source

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Pressure-Temperature Phase Diagram of Multiferroic $Ni_3V_2O_8$

, 2007
The pressure-temperature phase diagram of multiferroic $Ni_3V_2O_8$ is investigated for hydrostatic pressures up to 2 GPa. The stability range of the ferroelectric phase associated with the incommensurate helical spin order is reduced by pressure and ...
B. Lorenz, C. R. dela Cruz, C. W. Chu, C. W. Chu, F. Yen, R. P. Chaudhury, Y. Q. Wang, Y. Y. Sun   +7 more
core   +1 more source